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Finding the Fourth Proportional to 641,729.67, 885,597.40 and 351,336.34

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Solution

The fourth proportional to 641,729.67, 885,597.40 and 351,336.34 is: 484,849.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,729.67 : 885,597.40 = 351,336.34 : x
  2. Step 2: Convert to fraction form
    641,729.67/885,597.40 = 351,336.34/x
  3. Step 3: Cross multiply
    641,729.67x = 885,597.40 × 351,336.34
  4. Step 4: Simplify right side
    641,729.67x = 311,142,549,229.52
  5. Step 5: Solve for x
    x = 311,142,549,229.52/641,729.67
  6. Step 6: Final answer
    x = 484,849.87

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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.