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Finding the Fourth Proportional to 928,396, 1,393,216.08 and 337,420

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Solution

The fourth proportional to 928,396, 1,393,216.08 and 337,420 is: 506,356.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,396 : 1,393,216.08 = 337,420 : x
  2. Step 2: Convert to fraction form
    928,396/1,393,216.08 = 337,420/x
  3. Step 3: Cross multiply
    928,396x = 1,393,216.08 × 337,420
  4. Step 4: Simplify right side
    928,396x = 470,098,969,713.60
  5. Step 5: Solve for x
    x = 470,098,969,713.60/928,396
  6. Step 6: Final answer
    x = 506,356.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.