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Finding the Fourth Proportional to 613,167.71, 845,294.48 and 431,315.21

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Solution

The fourth proportional to 613,167.71, 845,294.48 and 431,315.21 is: 594,598.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,167.71 : 845,294.48 = 431,315.21 : x
  2. Step 2: Convert to fraction form
    613,167.71/845,294.48 = 431,315.21/x
  3. Step 3: Cross multiply
    613,167.71x = 845,294.48 × 431,315.21
  4. Step 4: Simplify right side
    613,167.71x = 364,588,359,769.99
  5. Step 5: Solve for x
    x = 364,588,359,769.99/613,167.71
  6. Step 6: Final answer
    x = 594,598.11

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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.