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Finding the Fourth Proportional to 555,523.59, 766,620.13 and 310,508.02

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Solution

The fourth proportional to 555,523.59, 766,620.13 and 310,508.02 is: 428,499.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,523.59 : 766,620.13 = 310,508.02 : x
  2. Step 2: Convert to fraction form
    555,523.59/766,620.13 = 310,508.02/x
  3. Step 3: Cross multiply
    555,523.59x = 766,620.13 × 310,508.02
  4. Step 4: Simplify right side
    555,523.59x = 238,041,698,658.44
  5. Step 5: Solve for x
    x = 238,041,698,658.44/555,523.59
  6. Step 6: Final answer
    x = 428,499.71

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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.