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Finding the Fourth Proportional to 552,432.12, 762,348.78 and 310,714.62

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Solution

The fourth proportional to 552,432.12, 762,348.78 and 310,714.62 is: 428,781.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,432.12 : 762,348.78 = 310,714.62 : x
  2. Step 2: Convert to fraction form
    552,432.12/762,348.78 = 310,714.62/x
  3. Step 3: Cross multiply
    552,432.12x = 762,348.78 × 310,714.62
  4. Step 4: Simplify right side
    552,432.12x = 236,872,911,485.16
  5. Step 5: Solve for x
    x = 236,872,911,485.16/552,432.12
  6. Step 6: Final answer
    x = 428,781.93

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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.