Home / 918,441.90-1,377,334.80-319,422.60

Finding the Fourth Proportional to 918,441.90, 1,377,334.80 and 319,422.60

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Solution

The fourth proportional to 918,441.90, 1,377,334.80 and 319,422.60 is: 479,019.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,441.90 : 1,377,334.80 = 319,422.60 : x
  2. Step 2: Convert to fraction form
    918,441.90/1,377,334.80 = 319,422.60/x
  3. Step 3: Cross multiply
    918,441.90x = 1,377,334.80 × 319,422.60
  4. Step 4: Simplify right side
    918,441.90x = 439,951,862,886.48
  5. Step 5: Solve for x
    x = 439,951,862,886.48/918,441.90
  6. Step 6: Final answer
    x = 479,019.81

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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.