Home / 727,981.80-1,091,972.70-664,996.20

Finding the Fourth Proportional to 727,981.80, 1,091,972.70 and 664,996.20

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Solution

The fourth proportional to 727,981.80, 1,091,972.70 and 664,996.20 is: 997,494.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,981.80 : 1,091,972.70 = 664,996.20 : x
  2. Step 2: Convert to fraction form
    727,981.80/1,091,972.70 = 664,996.20/x
  3. Step 3: Cross multiply
    727,981.80x = 1,091,972.70 × 664,996.20
  4. Step 4: Simplify right side
    727,981.80x = 726,157,696,003.74
  5. Step 5: Solve for x
    x = 726,157,696,003.74/727,981.80
  6. Step 6: Final answer
    x = 997,494.30

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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.