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Finding the Fourth Proportional to 658,506.87, 908,720.82 and 386,570.43

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Solution

The fourth proportional to 658,506.87, 908,720.82 and 386,570.43 is: 533,456.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,506.87 : 908,720.82 = 386,570.43 : x
  2. Step 2: Convert to fraction form
    658,506.87/908,720.82 = 386,570.43/x
  3. Step 3: Cross multiply
    658,506.87x = 908,720.82 × 386,570.43
  4. Step 4: Simplify right side
    658,506.87x = 351,284,598,137.35
  5. Step 5: Solve for x
    x = 351,284,598,137.35/658,506.87
  6. Step 6: Final answer
    x = 533,456.24

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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.