Home / 684,221.13-944,187.03-378,279.69

Finding the Fourth Proportional to 684,221.13, 944,187.03 and 378,279.69

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Solution

The fourth proportional to 684,221.13, 944,187.03 and 378,279.69 is: 522,004.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,221.13 : 944,187.03 = 378,279.69 : x
  2. Step 2: Convert to fraction form
    684,221.13/944,187.03 = 378,279.69/x
  3. Step 3: Cross multiply
    684,221.13x = 944,187.03 × 378,279.69
  4. Step 4: Simplify right side
    684,221.13x = 357,166,777,010.42
  5. Step 5: Solve for x
    x = 357,166,777,010.42/684,221.13
  6. Step 6: Final answer
    x = 522,004.89

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Double scale
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Similar ratio
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1.5x scale

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.