Home / 658,057.20-988,122.60-378,121.20

Finding the Fourth Proportional to 658,057.20, 988,122.60 and 378,121.20

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Solution

The fourth proportional to 658,057.20, 988,122.60 and 378,121.20 is: 567,777.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,057.20 : 988,122.60 = 378,121.20 : x
  2. Step 2: Convert to fraction form
    658,057.20/988,122.60 = 378,121.20/x
  3. Step 3: Cross multiply
    658,057.20x = 988,122.60 × 378,121.20
  4. Step 4: Simplify right side
    658,057.20x = 373,630,103,259.12
  5. Step 5: Solve for x
    x = 373,630,103,259.12/658,057.20
  6. Step 6: Final answer
    x = 567,777.55

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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.