Home / 641,934.16-885,897.20-355,454.48

Finding the Fourth Proportional to 641,934.16, 885,897.20 and 355,454.48

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Solution

The fourth proportional to 641,934.16, 885,897.20 and 355,454.48 is: 490,542.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,934.16 : 885,897.20 = 355,454.48 : x
  2. Step 2: Convert to fraction form
    641,934.16/885,897.20 = 355,454.48/x
  3. Step 3: Cross multiply
    641,934.16x = 885,897.20 × 355,454.48
  4. Step 4: Simplify right side
    641,934.16x = 314,896,126,679.66
  5. Step 5: Solve for x
    x = 314,896,126,679.66/641,934.16
  6. Step 6: Final answer
    x = 490,542.71

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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.