Home / 724,714.20-1,087,071.30-512,137.80

Finding the Fourth Proportional to 724,714.20, 1,087,071.30 and 512,137.80

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Solution

The fourth proportional to 724,714.20, 1,087,071.30 and 512,137.80 is: 768,206.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,714.20 : 1,087,071.30 = 512,137.80 : x
  2. Step 2: Convert to fraction form
    724,714.20/1,087,071.30 = 512,137.80/x
  3. Step 3: Cross multiply
    724,714.20x = 1,087,071.30 × 512,137.80
  4. Step 4: Simplify right side
    724,714.20x = 556,730,304,025.14
  5. Step 5: Solve for x
    x = 556,730,304,025.14/724,714.20
  6. Step 6: Final answer
    x = 768,206.70

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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.