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Finding the Fourth Proportional to 928,735.44, 1,281,565.28 and 520,854

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Solution

The fourth proportional to 928,735.44, 1,281,565.28 and 520,854 is: 718,728.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,735.44 : 1,281,565.28 = 520,854 : x
  2. Step 2: Convert to fraction form
    928,735.44/1,281,565.28 = 520,854/x
  3. Step 3: Cross multiply
    928,735.44x = 1,281,565.28 × 520,854
  4. Step 4: Simplify right side
    928,735.44x = 667,508,402,349.12
  5. Step 5: Solve for x
    x = 667,508,402,349.12/928,735.44
  6. Step 6: Final answer
    x = 718,728.26

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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.