Home / 880,456.60-1,320,101.70-319,418.20

Finding the Fourth Proportional to 880,456.60, 1,320,101.70 and 319,418.20

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Solution

The fourth proportional to 880,456.60, 1,320,101.70 and 319,418.20 is: 478,915.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,456.60 : 1,320,101.70 = 319,418.20 : x
  2. Step 2: Convert to fraction form
    880,456.60/1,320,101.70 = 319,418.20/x
  3. Step 3: Cross multiply
    880,456.60x = 1,320,101.70 × 319,418.20
  4. Step 4: Simplify right side
    880,456.60x = 421,664,508,830.94
  5. Step 5: Solve for x
    x = 421,664,508,830.94/880,456.60
  6. Step 6: Final answer
    x = 478,915.72

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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.