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Finding the Fourth Proportional to 425,627.10, 586,877.67 and 318,015.90

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Solution

The fourth proportional to 425,627.10, 586,877.67 and 318,015.90 is: 438,497.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,627.10 : 586,877.67 = 318,015.90 : x
  2. Step 2: Convert to fraction form
    425,627.10/586,877.67 = 318,015.90/x
  3. Step 3: Cross multiply
    425,627.10x = 586,877.67 × 318,015.90
  4. Step 4: Simplify right side
    425,627.10x = 186,636,430,414.95
  5. Step 5: Solve for x
    x = 186,636,430,414.95/425,627.10
  6. Step 6: Final answer
    x = 438,497.53

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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.