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Finding the Fourth Proportional to 707,432.27, 976,276.94 and 385,147.85

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Solution

The fourth proportional to 707,432.27, 976,276.94 and 385,147.85 is: 531,515.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,432.27 : 976,276.94 = 385,147.85 : x
  2. Step 2: Convert to fraction form
    707,432.27/976,276.94 = 385,147.85/x
  3. Step 3: Cross multiply
    707,432.27x = 976,276.94 × 385,147.85
  4. Step 4: Simplify right side
    707,432.27x = 376,010,957,638.46
  5. Step 5: Solve for x
    x = 376,010,957,638.46/707,432.27
  6. Step 6: Final answer
    x = 531,515.14

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1.5x scale

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.