Home / 866,057,694.30-1,299,086,541.45-858,404,943.90

Finding the Fourth Proportional to 866,057,694.30, 1,299,086,541.45 and 858,404,943.90

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Solution

The fourth proportional to 866,057,694.30, 1,299,086,541.45 and 858,404,943.90 is: 1,287,607,415.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,057,694.30 : 1,299,086,541.45 = 858,404,943.90 : x
  2. Step 2: Convert to fraction form
    866,057,694.30/1,299,086,541.45 = 858,404,943.90/x
  3. Step 3: Cross multiply
    866,057,694.30x = 1,299,086,541.45 × 858,404,943.90
  4. Step 4: Simplify right side
    866,057,694.30x = 1,115,142,309,734,632,320
  5. Step 5: Solve for x
    x = 1,115,142,309,734,632,320/866,057,694.30
  6. Step 6: Final answer
    x = 1,287,607,415.85

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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.