Home / 1,207,232,008.40-1,810,848,012.60-656,233,979.60

Finding the Fourth Proportional to 1,207,232,008.40, 1,810,848,012.60 and 656,233,979.60

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Solution

The fourth proportional to 1,207,232,008.40, 1,810,848,012.60 and 656,233,979.60 is: 984,350,969.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,232,008.40 : 1,810,848,012.60 = 656,233,979.60 : x
  2. Step 2: Convert to fraction form
    1,207,232,008.40/1,810,848,012.60 = 656,233,979.60/x
  3. Step 3: Cross multiply
    1,207,232,008.40x = 1,810,848,012.60 × 656,233,979.60
  4. Step 4: Simplify right side
    1,207,232,008.40x = 1,188,339,997,759,248,896
  5. Step 5: Solve for x
    x = 1,188,339,997,759,248,896/1,207,232,008.40
  6. Step 6: Final answer
    x = 984,350,969.40

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Half scale
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Double scale
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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.