Home / 642,826.78-887,108.97-370,951.09

Finding the Fourth Proportional to 642,826.78, 887,108.97 and 370,951.09

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Solution

The fourth proportional to 642,826.78, 887,108.97 and 370,951.09 is: 511,917.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,826.78 : 887,108.97 = 370,951.09 : x
  2. Step 2: Convert to fraction form
    642,826.78/887,108.97 = 370,951.09/x
  3. Step 3: Cross multiply
    642,826.78x = 887,108.97 × 370,951.09
  4. Step 4: Simplify right side
    642,826.78x = 329,074,039,370.28
  5. Step 5: Solve for x
    x = 329,074,039,370.28/642,826.78
  6. Step 6: Final answer
    x = 511,917.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.