Home / 928,046.40-1,390,946.40-394,447.20

Finding the Fourth Proportional to 928,046.40, 1,390,946.40 and 394,447.20

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Solution

The fourth proportional to 928,046.40, 1,390,946.40 and 394,447.20 is: 591,193.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,046.40 : 1,390,946.40 = 394,447.20 : x
  2. Step 2: Convert to fraction form
    928,046.40/1,390,946.40 = 394,447.20/x
  3. Step 3: Cross multiply
    928,046.40x = 1,390,946.40 × 394,447.20
  4. Step 4: Simplify right side
    928,046.40x = 548,654,912,830.08
  5. Step 5: Solve for x
    x = 548,654,912,830.08/928,046.40
  6. Step 6: Final answer
    x = 591,193.41

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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.