Home / 782,715.78-1,079,670.36-517,500.50

Finding the Fourth Proportional to 782,715.78, 1,079,670.36 and 517,500.50

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Solution

The fourth proportional to 782,715.78, 1,079,670.36 and 517,500.50 is: 713,835.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,715.78 : 1,079,670.36 = 517,500.50 : x
  2. Step 2: Convert to fraction form
    782,715.78/1,079,670.36 = 517,500.50/x
  3. Step 3: Cross multiply
    782,715.78x = 1,079,670.36 × 517,500.50
  4. Step 4: Simplify right side
    782,715.78x = 558,729,951,135.18
  5. Step 5: Solve for x
    x = 558,729,951,135.18/782,715.78
  6. Step 6: Final answer
    x = 713,835.04

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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.