Home / 641,949.97-885,880.12-355,463.90

Finding the Fourth Proportional to 641,949.97, 885,880.12 and 355,463.90

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Solution

The fourth proportional to 641,949.97, 885,880.12 and 355,463.90 is: 490,534.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,949.97 : 885,880.12 = 355,463.90 : x
  2. Step 2: Convert to fraction form
    641,949.97/885,880.12 = 355,463.90/x
  3. Step 3: Cross multiply
    641,949.97x = 885,880.12 × 355,463.90
  4. Step 4: Simplify right side
    641,949.97x = 314,898,402,387.67
  5. Step 5: Solve for x
    x = 314,898,402,387.67/641,949.97
  6. Step 6: Final answer
    x = 490,534.18

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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.