Home / 815,997.60-1,224,190.80-394,927.20

Finding the Fourth Proportional to 815,997.60, 1,224,190.80 and 394,927.20

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Solution

The fourth proportional to 815,997.60, 1,224,190.80 and 394,927.20 is: 592,484.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,997.60 : 1,224,190.80 = 394,927.20 : x
  2. Step 2: Convert to fraction form
    815,997.60/1,224,190.80 = 394,927.20/x
  3. Step 3: Cross multiply
    815,997.60x = 1,224,190.80 × 394,927.20
  4. Step 4: Simplify right side
    815,997.60x = 483,466,244,909.76
  5. Step 5: Solve for x
    x = 483,466,244,909.76/815,997.60
  6. Step 6: Final answer
    x = 592,484.89

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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.