Home / 437,428.80-656,402.40-288,097.20

Finding the Fourth Proportional to 437,428.80, 656,402.40 and 288,097.20

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Solution

The fourth proportional to 437,428.80, 656,402.40 and 288,097.20 is: 432,316.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,428.80 : 656,402.40 = 288,097.20 : x
  2. Step 2: Convert to fraction form
    437,428.80/656,402.40 = 288,097.20/x
  3. Step 3: Cross multiply
    437,428.80x = 656,402.40 × 288,097.20
  4. Step 4: Simplify right side
    437,428.80x = 189,107,693,513.28
  5. Step 5: Solve for x
    x = 189,107,693,513.28/437,428.80
  6. Step 6: Final answer
    x = 432,316.51

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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.