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Finding the Fourth Proportional to 531,419.76, 732,944.16 and 340,451.28

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Solution

The fourth proportional to 531,419.76, 732,944.16 and 340,451.28 is: 469,556.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,419.76 : 732,944.16 = 340,451.28 : x
  2. Step 2: Convert to fraction form
    531,419.76/732,944.16 = 340,451.28/x
  3. Step 3: Cross multiply
    531,419.76x = 732,944.16 × 340,451.28
  4. Step 4: Simplify right side
    531,419.76x = 249,531,777,440.53
  5. Step 5: Solve for x
    x = 249,531,777,440.53/531,419.76
  6. Step 6: Final answer
    x = 469,556.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.