Home / 918,281.80-1,377,422.70-664,371.10

Finding the Fourth Proportional to 918,281.80, 1,377,422.70 and 664,371.10

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Solution

The fourth proportional to 918,281.80, 1,377,422.70 and 664,371.10 is: 996,556.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,281.80 : 1,377,422.70 = 664,371.10 : x
  2. Step 2: Convert to fraction form
    918,281.80/1,377,422.70 = 664,371.10/x
  3. Step 3: Cross multiply
    918,281.80x = 1,377,422.70 × 664,371.10
  4. Step 4: Simplify right side
    918,281.80x = 915,119,834,363.97
  5. Step 5: Solve for x
    x = 915,119,834,363.97/918,281.80
  6. Step 6: Final answer
    x = 996,556.65

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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.