Home / 1,438,507.91-2,155,957.57-762,921.74

Finding the Fourth Proportional to 1,438,507.91, 2,155,957.57 and 762,921.74

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Solution

The fourth proportional to 1,438,507.91, 2,155,957.57 and 762,921.74 is: 1,143,425.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,507.91 : 2,155,957.57 = 762,921.74 : x
  2. Step 2: Convert to fraction form
    1,438,507.91/2,155,957.57 = 762,921.74/x
  3. Step 3: Cross multiply
    1,438,507.91x = 2,155,957.57 × 762,921.74
  4. Step 4: Simplify right side
    1,438,507.91x = 1,644,826,900,670.57
  5. Step 5: Solve for x
    x = 1,644,826,900,670.57/1,438,507.91
  6. Step 6: Final answer
    x = 1,143,425.69

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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.