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Finding the Fourth Proportional to 672,149.79, 927,587.73 and 385,722.27

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Solution

The fourth proportional to 672,149.79, 927,587.73 and 385,722.27 is: 532,308.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,149.79 : 927,587.73 = 385,722.27 : x
  2. Step 2: Convert to fraction form
    672,149.79/927,587.73 = 385,722.27/x
  3. Step 3: Cross multiply
    672,149.79x = 927,587.73 × 385,722.27
  4. Step 4: Simplify right side
    672,149.79x = 357,791,244,839.75
  5. Step 5: Solve for x
    x = 357,791,244,839.75/672,149.79
  6. Step 6: Final answer
    x = 532,308.80

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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.