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Finding the Fourth Proportional to 580,814.16, 801,638.28 and 371,128.02

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Solution

The fourth proportional to 580,814.16, 801,638.28 and 371,128.02 is: 512,229.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,814.16 : 801,638.28 = 371,128.02 : x
  2. Step 2: Convert to fraction form
    580,814.16/801,638.28 = 371,128.02/x
  3. Step 3: Cross multiply
    580,814.16x = 801,638.28 × 371,128.02
  4. Step 4: Simplify right side
    580,814.16x = 297,510,427,612.61
  5. Step 5: Solve for x
    x = 297,510,427,612.61/580,814.16
  6. Step 6: Final answer
    x = 512,229.98

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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.