Home / 643,711.40-888,116.24-371,743.38

Finding the Fourth Proportional to 643,711.40, 888,116.24 and 371,743.38

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Solution

The fourth proportional to 643,711.40, 888,116.24 and 371,743.38 is: 512,887.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,711.40 : 888,116.24 = 371,743.38 : x
  2. Step 2: Convert to fraction form
    643,711.40/888,116.24 = 371,743.38/x
  3. Step 3: Cross multiply
    643,711.40x = 888,116.24 × 371,743.38
  4. Step 4: Simplify right side
    643,711.40x = 330,151,332,890.49
  5. Step 5: Solve for x
    x = 330,151,332,890.49/643,711.40
  6. Step 6: Final answer
    x = 512,887.19

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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.