Home / 1,207,232,455.40-1,810,848,683.10-656,234,426.60

Finding the Fourth Proportional to 1,207,232,455.40, 1,810,848,683.10 and 656,234,426.60

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Solution

The fourth proportional to 1,207,232,455.40, 1,810,848,683.10 and 656,234,426.60 is: 984,351,639.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,232,455.40 : 1,810,848,683.10 = 656,234,426.60 : x
  2. Step 2: Convert to fraction form
    1,207,232,455.40/1,810,848,683.10 = 656,234,426.60/x
  3. Step 3: Cross multiply
    1,207,232,455.40x = 1,810,848,683.10 × 656,234,426.60
  4. Step 4: Simplify right side
    1,207,232,455.40x = 1,188,341,247,213,493,504
  5. Step 5: Solve for x
    x = 1,188,341,247,213,493,504/1,207,232,455.40
  6. Step 6: Final answer
    x = 984,351,639.90

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Half scale
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Double scale
Find fourth proportional to 1,207,232,456.40, 1,810,848,684.60 and 656,234,427.60
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.