Home / 1,099,570.40-1,649,355.60-389,670.20

Finding the Fourth Proportional to 1,099,570.40, 1,649,355.60 and 389,670.20

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Solution

The fourth proportional to 1,099,570.40, 1,649,355.60 and 389,670.20 is: 584,505.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099,570.40 : 1,649,355.60 = 389,670.20 : x
  2. Step 2: Convert to fraction form
    1,099,570.40/1,649,355.60 = 389,670.20/x
  3. Step 3: Cross multiply
    1,099,570.40x = 1,649,355.60 × 389,670.20
  4. Step 4: Simplify right side
    1,099,570.40x = 642,704,726,523.12
  5. Step 5: Solve for x
    x = 642,704,726,523.12/1,099,570.40
  6. Step 6: Final answer
    x = 584,505.30

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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.