Home / 725,077.40-1,087,616.10-538,453.40

Finding the Fourth Proportional to 725,077.40, 1,087,616.10 and 538,453.40

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Solution

The fourth proportional to 725,077.40, 1,087,616.10 and 538,453.40 is: 807,680.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,077.40 : 1,087,616.10 = 538,453.40 : x
  2. Step 2: Convert to fraction form
    725,077.40/1,087,616.10 = 538,453.40/x
  3. Step 3: Cross multiply
    725,077.40x = 1,087,616.10 × 538,453.40
  4. Step 4: Simplify right side
    725,077.40x = 585,630,586,939.74
  5. Step 5: Solve for x
    x = 585,630,586,939.74/725,077.40
  6. Step 6: Final answer
    x = 807,680.10

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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.