Home / 657,206.10-985,809.15-432,819.90

Finding the Fourth Proportional to 657,206.10, 985,809.15 and 432,819.90

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Solution

The fourth proportional to 657,206.10, 985,809.15 and 432,819.90 is: 649,229.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,206.10 : 985,809.15 = 432,819.90 : x
  2. Step 2: Convert to fraction form
    657,206.10/985,809.15 = 432,819.90/x
  3. Step 3: Cross multiply
    657,206.10x = 985,809.15 × 432,819.90
  4. Step 4: Simplify right side
    657,206.10x = 426,677,817,722.09
  5. Step 5: Solve for x
    x = 426,677,817,722.09/657,206.10
  6. Step 6: Final answer
    x = 649,229.85

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Half scale
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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.