Home / 724,658.20-1,086,987.30-512,081.80

Finding the Fourth Proportional to 724,658.20, 1,086,987.30 and 512,081.80

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Solution

The fourth proportional to 724,658.20, 1,086,987.30 and 512,081.80 is: 768,122.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,658.20 : 1,086,987.30 = 512,081.80 : x
  2. Step 2: Convert to fraction form
    724,658.20/1,086,987.30 = 512,081.80/x
  3. Step 3: Cross multiply
    724,658.20x = 1,086,987.30 × 512,081.80
  4. Step 4: Simplify right side
    724,658.20x = 556,626,413,161.14
  5. Step 5: Solve for x
    x = 556,626,413,161.14/724,658.20
  6. Step 6: Final answer
    x = 768,122.70

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Double scale
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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.