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Finding the Fourth Proportional to 1,395,489.60, 2,096,344.80 and 1,338,811.20

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Solution

The fourth proportional to 1,395,489.60, 2,096,344.80 and 1,338,811.20 is: 2,011,200.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395,489.60 : 2,096,344.80 = 1,338,811.20 : x
  2. Step 2: Convert to fraction form
    1,395,489.60/2,096,344.80 = 1,338,811.20/x
  3. Step 3: Cross multiply
    1,395,489.60x = 2,096,344.80 × 1,338,811.20
  4. Step 4: Simplify right side
    1,395,489.60x = 2,806,609,897,301.76
  5. Step 5: Solve for x
    x = 2,806,609,897,301.76/1,395,489.60
  6. Step 6: Final answer
    x = 2,011,200.87

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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.