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Finding the Fourth Proportional to 406,729.78, 560,995.64 and 268,748.89

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Solution

The fourth proportional to 406,729.78, 560,995.64 and 268,748.89 is: 370,680.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,729.78 : 560,995.64 = 268,748.89 : x
  2. Step 2: Convert to fraction form
    406,729.78/560,995.64 = 268,748.89/x
  3. Step 3: Cross multiply
    406,729.78x = 560,995.64 × 268,748.89
  4. Step 4: Simplify right side
    406,729.78x = 150,766,953,806.41
  5. Step 5: Solve for x
    x = 150,766,953,806.41/406,729.78
  6. Step 6: Final answer
    x = 370,680.88

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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.