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Finding the Fourth Proportional to 547,614.63, 820,575.30 and 427,386.54

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Solution

The fourth proportional to 547,614.63, 820,575.30 and 427,386.54 is: 640,419.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,614.63 : 820,575.30 = 427,386.54 : x
  2. Step 2: Convert to fraction form
    547,614.63/820,575.30 = 427,386.54/x
  3. Step 3: Cross multiply
    547,614.63x = 820,575.30 × 427,386.54
  4. Step 4: Simplify right side
    547,614.63x = 350,702,838,276.46
  5. Step 5: Solve for x
    x = 350,702,838,276.46/547,614.63
  6. Step 6: Final answer
    x = 640,419.04

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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.