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Finding the Fourth Proportional to 721,063.20, 1,081,594.80 and 606,901.80

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Solution

The fourth proportional to 721,063.20, 1,081,594.80 and 606,901.80 is: 910,352.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,063.20 : 1,081,594.80 = 606,901.80 : x
  2. Step 2: Convert to fraction form
    721,063.20/1,081,594.80 = 606,901.80/x
  3. Step 3: Cross multiply
    721,063.20x = 1,081,594.80 × 606,901.80
  4. Step 4: Simplify right side
    721,063.20x = 656,421,830,990.64
  5. Step 5: Solve for x
    x = 656,421,830,990.64/721,063.20
  6. Step 6: Final answer
    x = 910,352.70

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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.