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Finding the Fourth Proportional to 576,927.72, 861,793.88 and 427,459.94

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Solution

The fourth proportional to 576,927.72, 861,793.88 and 427,459.94 is: 638,524.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,927.72 : 861,793.88 = 427,459.94 : x
  2. Step 2: Convert to fraction form
    576,927.72/861,793.88 = 427,459.94/x
  3. Step 3: Cross multiply
    576,927.72x = 861,793.88 × 427,459.94
  4. Step 4: Simplify right side
    576,927.72x = 368,382,360,237.17
  5. Step 5: Solve for x
    x = 368,382,360,237.17/576,927.72
  6. Step 6: Final answer
    x = 638,524.29

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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.