Home / 918,336.80-1,377,505.20-664,426.10

Finding the Fourth Proportional to 918,336.80, 1,377,505.20 and 664,426.10

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Solution

The fourth proportional to 918,336.80, 1,377,505.20 and 664,426.10 is: 996,639.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,336.80 : 1,377,505.20 = 664,426.10 : x
  2. Step 2: Convert to fraction form
    918,336.80/1,377,505.20 = 664,426.10/x
  3. Step 3: Cross multiply
    918,336.80x = 1,377,505.20 × 664,426.10
  4. Step 4: Simplify right side
    918,336.80x = 915,250,407,765.72
  5. Step 5: Solve for x
    x = 915,250,407,765.72/918,336.80
  6. Step 6: Final answer
    x = 996,639.15

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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.