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Finding the Fourth Proportional to 1,250,407.68, 1,867,123.20 and 994,829.28

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Solution

The fourth proportional to 1,250,407.68, 1,867,123.20 and 994,829.28 is: 1,485,490.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,250,407.68 : 1,867,123.20 = 994,829.28 : x
  2. Step 2: Convert to fraction form
    1,250,407.68/1,867,123.20 = 994,829.28/x
  3. Step 3: Cross multiply
    1,250,407.68x = 1,867,123.20 × 994,829.28
  4. Step 4: Simplify right side
    1,250,407.68x = 1,857,468,828,727.30
  5. Step 5: Solve for x
    x = 1,857,468,828,727.30/1,250,407.68
  6. Step 6: Final answer
    x = 1,485,490.58

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.