Home / 729,018.38-1,006,074.53-406,756.64

Finding the Fourth Proportional to 729,018.38, 1,006,074.53 and 406,756.64

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Solution

The fourth proportional to 729,018.38, 1,006,074.53 and 406,756.64 is: 561,340.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,018.38 : 1,006,074.53 = 406,756.64 : x
  2. Step 2: Convert to fraction form
    729,018.38/1,006,074.53 = 406,756.64/x
  3. Step 3: Cross multiply
    729,018.38x = 1,006,074.53 × 406,756.64
  4. Step 4: Simplify right side
    729,018.38x = 409,227,488,348.22
  5. Step 5: Solve for x
    x = 409,227,488,348.22/729,018.38
  6. Step 6: Final answer
    x = 561,340.43

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Double scale
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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.