Home / 672,724.56-928,356.12-370,918.80

Finding the Fourth Proportional to 672,724.56, 928,356.12 and 370,918.80

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Solution

The fourth proportional to 672,724.56, 928,356.12 and 370,918.80 is: 511,865.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,724.56 : 928,356.12 = 370,918.80 : x
  2. Step 2: Convert to fraction form
    672,724.56/928,356.12 = 370,918.80/x
  3. Step 3: Cross multiply
    672,724.56x = 928,356.12 × 370,918.80
  4. Step 4: Simplify right side
    672,724.56x = 344,344,738,003.06
  5. Step 5: Solve for x
    x = 344,344,738,003.06/672,724.56
  6. Step 6: Final answer
    x = 511,865.86

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Double scale
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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.