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Finding the Fourth Proportional to 547,610.59, 820,569.21 and 427,382.47

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Solution

The fourth proportional to 547,610.59, 820,569.21 and 427,382.47 is: 640,412.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,610.59 : 820,569.21 = 427,382.47 : x
  2. Step 2: Convert to fraction form
    547,610.59/820,569.21 = 427,382.47/x
  3. Step 3: Cross multiply
    547,610.59x = 820,569.21 × 427,382.47
  4. Step 4: Simplify right side
    547,610.59x = 350,696,895,775.75
  5. Step 5: Solve for x
    x = 350,696,895,775.75/547,610.59
  6. Step 6: Final answer
    x = 640,412.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.