Home / 918,231.80-1,377,347.70-664,321.10

Finding the Fourth Proportional to 918,231.80, 1,377,347.70 and 664,321.10

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Solution

The fourth proportional to 918,231.80, 1,377,347.70 and 664,321.10 is: 996,481.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,231.80 : 1,377,347.70 = 664,321.10 : x
  2. Step 2: Convert to fraction form
    918,231.80/1,377,347.70 = 664,321.10/x
  3. Step 3: Cross multiply
    918,231.80x = 1,377,347.70 × 664,321.10
  4. Step 4: Simplify right side
    918,231.80x = 915,001,139,146.47
  5. Step 5: Solve for x
    x = 915,001,139,146.47/918,231.80
  6. Step 6: Final answer
    x = 996,481.65

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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.