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Finding the Fourth Proportional to 576,926.66, 861,792.29 and 427,458.87

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Solution

The fourth proportional to 576,926.66, 861,792.29 and 427,458.87 is: 638,522.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,926.66 : 861,792.29 = 427,458.87 : x
  2. Step 2: Convert to fraction form
    576,926.66/861,792.29 = 427,458.87/x
  3. Step 3: Cross multiply
    576,926.66x = 861,792.29 × 427,458.87
  4. Step 4: Simplify right side
    576,926.66x = 368,380,759,526.76
  5. Step 5: Solve for x
    x = 368,380,759,526.76/576,926.66
  6. Step 6: Final answer
    x = 638,522.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.