Home / 989,401.60-1,479,436.80-737,459.20

Finding the Fourth Proportional to 989,401.60, 1,479,436.80 and 737,459.20

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Solution

The fourth proportional to 989,401.60, 1,479,436.80 and 737,459.20 is: 1,102,711.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,401.60 : 1,479,436.80 = 737,459.20 : x
  2. Step 2: Convert to fraction form
    989,401.60/1,479,436.80 = 737,459.20/x
  3. Step 3: Cross multiply
    989,401.60x = 1,479,436.80 × 737,459.20
  4. Step 4: Simplify right side
    989,401.60x = 1,091,024,278,978.56
  5. Step 5: Solve for x
    x = 1,091,024,278,978.56/989,401.60
  6. Step 6: Final answer
    x = 1,102,711.25

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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.