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Finding the Fourth Proportional to 392,448.90, 588,673.35 and 389,496.45

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Solution

The fourth proportional to 392,448.90, 588,673.35 and 389,496.45 is: 584,244.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,448.90 : 588,673.35 = 389,496.45 : x
  2. Step 2: Convert to fraction form
    392,448.90/588,673.35 = 389,496.45/x
  3. Step 3: Cross multiply
    392,448.90x = 588,673.35 × 389,496.45
  4. Step 4: Simplify right side
    392,448.90x = 229,286,180,034.61
  5. Step 5: Solve for x
    x = 229,286,180,034.61/392,448.90
  6. Step 6: Final answer
    x = 584,244.68

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1.5x scale

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.