Home / 1,139,237.38-1,572,143.47-642,481.80

Finding the Fourth Proportional to 1,139,237.38, 1,572,143.47 and 642,481.80

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Solution

The fourth proportional to 1,139,237.38, 1,572,143.47 and 642,481.80 is: 886,622.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,237.38 : 1,572,143.47 = 642,481.80 : x
  2. Step 2: Convert to fraction form
    1,139,237.38/1,572,143.47 = 642,481.80/x
  3. Step 3: Cross multiply
    1,139,237.38x = 1,572,143.47 × 642,481.80
  4. Step 4: Simplify right side
    1,139,237.38x = 1,010,073,566,463.85
  5. Step 5: Solve for x
    x = 1,010,073,566,463.85/1,139,237.38
  6. Step 6: Final answer
    x = 886,622.56

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Double scale
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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.