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Finding the Fourth Proportional to 520,317.73, 780,464.40 and 239,834.98

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Solution

The fourth proportional to 520,317.73, 780,464.40 and 239,834.98 is: 359,746.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,317.73 : 780,464.40 = 239,834.98 : x
  2. Step 2: Convert to fraction form
    520,317.73/780,464.40 = 239,834.98/x
  3. Step 3: Cross multiply
    520,317.73x = 780,464.40 × 239,834.98
  4. Step 4: Simplify right side
    520,317.73x = 187,182,663,764.71
  5. Step 5: Solve for x
    x = 187,182,663,764.71/520,317.73
  6. Step 6: Final answer
    x = 359,746.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.