Home / 721,111.20-1,081,666.80-606,949.80

Finding the Fourth Proportional to 721,111.20, 1,081,666.80 and 606,949.80

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Solution

The fourth proportional to 721,111.20, 1,081,666.80 and 606,949.80 is: 910,424.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,111.20 : 1,081,666.80 = 606,949.80 : x
  2. Step 2: Convert to fraction form
    721,111.20/1,081,666.80 = 606,949.80/x
  3. Step 3: Cross multiply
    721,111.20x = 1,081,666.80 × 606,949.80
  4. Step 4: Simplify right side
    721,111.20x = 656,517,447,926.64
  5. Step 5: Solve for x
    x = 656,517,447,926.64/721,111.20
  6. Step 6: Final answer
    x = 910,424.70

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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.