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Finding the Fourth Proportional to 531,129.60, 732,949.37 and 289,414.26

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Solution

The fourth proportional to 531,129.60, 732,949.37 and 289,414.26 is: 399,386.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,129.60 : 732,949.37 = 289,414.26 : x
  2. Step 2: Convert to fraction form
    531,129.60/732,949.37 = 289,414.26/x
  3. Step 3: Cross multiply
    531,129.60x = 732,949.37 × 289,414.26
  4. Step 4: Simplify right side
    531,129.60x = 212,125,998,088.95
  5. Step 5: Solve for x
    x = 212,125,998,088.95/531,129.60
  6. Step 6: Final answer
    x = 399,386.51

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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.