Home / 749,081.20-1,123,621.80-497,138.80

Finding the Fourth Proportional to 749,081.20, 1,123,621.80 and 497,138.80

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Solution

The fourth proportional to 749,081.20, 1,123,621.80 and 497,138.80 is: 745,708.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,081.20 : 1,123,621.80 = 497,138.80 : x
  2. Step 2: Convert to fraction form
    749,081.20/1,123,621.80 = 497,138.80/x
  3. Step 3: Cross multiply
    749,081.20x = 1,123,621.80 × 497,138.80
  4. Step 4: Simplify right side
    749,081.20x = 558,595,993,305.84
  5. Step 5: Solve for x
    x = 558,595,993,305.84/749,081.20
  6. Step 6: Final answer
    x = 745,708.20

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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.