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Finding the Fourth Proportional to 539,292.71, 744,199.04 and 309,688.46

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Solution

The fourth proportional to 539,292.71, 744,199.04 and 309,688.46 is: 427,355.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,292.71 : 744,199.04 = 309,688.46 : x
  2. Step 2: Convert to fraction form
    539,292.71/744,199.04 = 309,688.46/x
  3. Step 3: Cross multiply
    539,292.71x = 744,199.04 × 309,688.46
  4. Step 4: Simplify right side
    539,292.71x = 230,469,858,661.17
  5. Step 5: Solve for x
    x = 230,469,858,661.17/539,292.71
  6. Step 6: Final answer
    x = 427,355.78

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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.