Home / 1,238,242.25-1,857,363.78-817,419.71

Finding the Fourth Proportional to 1,238,242.25, 1,857,363.78 and 817,419.71

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Solution

The fourth proportional to 1,238,242.25, 1,857,363.78 and 817,419.71 is: 1,226,129.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,242.25 : 1,857,363.78 = 817,419.71 : x
  2. Step 2: Convert to fraction form
    1,238,242.25/1,857,363.78 = 817,419.71/x
  3. Step 3: Cross multiply
    1,238,242.25x = 1,857,363.78 × 817,419.71
  4. Step 4: Simplify right side
    1,238,242.25x = 1,518,245,753,125.29
  5. Step 5: Solve for x
    x = 1,518,245,753,125.29/1,238,242.25
  6. Step 6: Final answer
    x = 1,226,129.83

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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.