Home / 979,881.60-1,469,822.40-418,972.80

Finding the Fourth Proportional to 979,881.60, 1,469,822.40 and 418,972.80

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Solution

The fourth proportional to 979,881.60, 1,469,822.40 and 418,972.80 is: 628,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,881.60 : 1,469,822.40 = 418,972.80 : x
  2. Step 2: Convert to fraction form
    979,881.60/1,469,822.40 = 418,972.80/x
  3. Step 3: Cross multiply
    979,881.60x = 1,469,822.40 × 418,972.80
  4. Step 4: Simplify right side
    979,881.60x = 615,815,606,430.72
  5. Step 5: Solve for x
    x = 615,815,606,430.72/979,881.60
  6. Step 6: Final answer
    x = 628,459.20

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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.