Home / 745,546.10-1,118,319.15-687,809.30

Finding the Fourth Proportional to 745,546.10, 1,118,319.15 and 687,809.30

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Solution

The fourth proportional to 745,546.10, 1,118,319.15 and 687,809.30 is: 1,031,713.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,546.10 : 1,118,319.15 = 687,809.30 : x
  2. Step 2: Convert to fraction form
    745,546.10/1,118,319.15 = 687,809.30/x
  3. Step 3: Cross multiply
    745,546.10x = 1,118,319.15 × 687,809.30
  4. Step 4: Simplify right side
    745,546.10x = 769,190,311,738.10
  5. Step 5: Solve for x
    x = 769,190,311,738.10/745,546.10
  6. Step 6: Final answer
    x = 1,031,713.95

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Double scale
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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.