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Finding the Fourth Proportional to 520,731.26, 780,894.95 and 179,109.73

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Solution

The fourth proportional to 520,731.26, 780,894.95 and 179,109.73 is: 268,595.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,731.26 : 780,894.95 = 179,109.73 : x
  2. Step 2: Convert to fraction form
    520,731.26/780,894.95 = 179,109.73/x
  3. Step 3: Cross multiply
    520,731.26x = 780,894.95 × 179,109.73
  4. Step 4: Simplify right side
    520,731.26x = 139,865,883,733.43
  5. Step 5: Solve for x
    x = 139,865,883,733.43/520,731.26
  6. Step 6: Final answer
    x = 268,595.14

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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.