Home / 918,341.80-1,377,512.70-664,431.10

Finding the Fourth Proportional to 918,341.80, 1,377,512.70 and 664,431.10

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Solution

The fourth proportional to 918,341.80, 1,377,512.70 and 664,431.10 is: 996,646.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,341.80 : 1,377,512.70 = 664,431.10 : x
  2. Step 2: Convert to fraction form
    918,341.80/1,377,512.70 = 664,431.10/x
  3. Step 3: Cross multiply
    918,341.80x = 1,377,512.70 × 664,431.10
  4. Step 4: Simplify right side
    918,341.80x = 915,262,278,524.97
  5. Step 5: Solve for x
    x = 915,262,278,524.97/918,341.80
  6. Step 6: Final answer
    x = 996,646.65

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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.