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Finding the Fourth Proportional to 565,345.28, 780,167.52 and 310,691.04

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Solution

The fourth proportional to 565,345.28, 780,167.52 and 310,691.04 is: 428,748.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,345.28 : 780,167.52 = 310,691.04 : x
  2. Step 2: Convert to fraction form
    565,345.28/780,167.52 = 310,691.04/x
  3. Step 3: Cross multiply
    565,345.28x = 780,167.52 × 310,691.04
  4. Step 4: Simplify right side
    565,345.28x = 242,391,058,163.02
  5. Step 5: Solve for x
    x = 242,391,058,163.02/565,345.28
  6. Step 6: Final answer
    x = 428,748.71

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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.