Home / 724,820.10-1,087,230.15-457,131.30

Finding the Fourth Proportional to 724,820.10, 1,087,230.15 and 457,131.30

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Solution

The fourth proportional to 724,820.10, 1,087,230.15 and 457,131.30 is: 685,696.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,820.10 : 1,087,230.15 = 457,131.30 : x
  2. Step 2: Convert to fraction form
    724,820.10/1,087,230.15 = 457,131.30/x
  3. Step 3: Cross multiply
    724,820.10x = 1,087,230.15 × 457,131.30
  4. Step 4: Simplify right side
    724,820.10x = 497,006,931,868.70
  5. Step 5: Solve for x
    x = 497,006,931,868.70/724,820.10
  6. Step 6: Final answer
    x = 685,696.95

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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.