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Finding the Fourth Proportional to 641,725.67, 885,591.87 and 351,332.34

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Solution

The fourth proportional to 641,725.67, 885,591.87 and 351,332.34 is: 484,844.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,725.67 : 885,591.87 = 351,332.34 : x
  2. Step 2: Convert to fraction form
    641,725.67/885,591.87 = 351,332.34/x
  3. Step 3: Cross multiply
    641,725.67x = 885,591.87 × 351,332.34
  4. Step 4: Simplify right side
    641,725.67x = 311,137,063,972.08
  5. Step 5: Solve for x
    x = 311,137,063,972.08/641,725.67
  6. Step 6: Final answer
    x = 484,844.35

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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.