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Finding the Fourth Proportional to 539,981.17, 744,679.16 and 368,155.87

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Solution

The fourth proportional to 539,981.17, 744,679.16 and 368,155.87 is: 507,717.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,981.17 : 744,679.16 = 368,155.87 : x
  2. Step 2: Convert to fraction form
    539,981.17/744,679.16 = 368,155.87/x
  3. Step 3: Cross multiply
    539,981.17x = 744,679.16 × 368,155.87
  4. Step 4: Simplify right side
    539,981.17x = 274,158,001,217.66
  5. Step 5: Solve for x
    x = 274,158,001,217.66/539,981.17
  6. Step 6: Final answer
    x = 507,717.71

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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.