Home / 514,217.28-709,660.80-378,869.52

Finding the Fourth Proportional to 514,217.28, 709,660.80 and 378,869.52

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Solution

The fourth proportional to 514,217.28, 709,660.80 and 378,869.52 is: 522,870.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,217.28 : 709,660.80 = 378,869.52 : x
  2. Step 2: Convert to fraction form
    514,217.28/709,660.80 = 378,869.52/x
  3. Step 3: Cross multiply
    514,217.28x = 709,660.80 × 378,869.52
  4. Step 4: Simplify right side
    514,217.28x = 268,868,846,658.82
  5. Step 5: Solve for x
    x = 268,868,846,658.82/514,217.28
  6. Step 6: Final answer
    x = 522,870.11

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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.