Home / 509,077.70-763,615.90-129,998.24

Finding the Fourth Proportional to 509,077.70, 763,615.90 and 129,998.24

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Solution

The fourth proportional to 509,077.70, 763,615.90 and 129,998.24 is: 194,997.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,077.70 : 763,615.90 = 129,998.24 : x
  2. Step 2: Convert to fraction form
    509,077.70/763,615.90 = 129,998.24/x
  3. Step 3: Cross multiply
    509,077.70x = 763,615.90 × 129,998.24
  4. Step 4: Simplify right side
    509,077.70x = 99,268,723,036.02
  5. Step 5: Solve for x
    x = 99,268,723,036.02/509,077.70
  6. Step 6: Final answer
    x = 194,997.19

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.