Home / 987,356.52-1,480,037.40-388,737.72

Finding the Fourth Proportional to 987,356.52, 1,480,037.40 and 388,737.72

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Solution

The fourth proportional to 987,356.52, 1,480,037.40 and 388,737.72 is: 582,713.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,356.52 : 1,480,037.40 = 388,737.72 : x
  2. Step 2: Convert to fraction form
    987,356.52/1,480,037.40 = 388,737.72/x
  3. Step 3: Cross multiply
    987,356.52x = 1,480,037.40 × 388,737.72
  4. Step 4: Simplify right side
    987,356.52x = 575,346,364,390.73
  5. Step 5: Solve for x
    x = 575,346,364,390.73/987,356.52
  6. Step 6: Final answer
    x = 582,713.90

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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.