Home / 866,972.80-1,300,070.40-393,414.40

Finding the Fourth Proportional to 866,972.80, 1,300,070.40 and 393,414.40

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Solution

The fourth proportional to 866,972.80, 1,300,070.40 and 393,414.40 is: 589,945.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,972.80 : 1,300,070.40 = 393,414.40 : x
  2. Step 2: Convert to fraction form
    866,972.80/1,300,070.40 = 393,414.40/x
  3. Step 3: Cross multiply
    866,972.80x = 1,300,070.40 × 393,414.40
  4. Step 4: Simplify right side
    866,972.80x = 511,466,416,373.76
  5. Step 5: Solve for x
    x = 511,466,416,373.76/866,972.80
  6. Step 6: Final answer
    x = 589,945.17

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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.