Home / 725,421.60-1,088,132.40-445,096.80

Finding the Fourth Proportional to 725,421.60, 1,088,132.40 and 445,096.80

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Solution

The fourth proportional to 725,421.60, 1,088,132.40 and 445,096.80 is: 667,645.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,421.60 : 1,088,132.40 = 445,096.80 : x
  2. Step 2: Convert to fraction form
    725,421.60/1,088,132.40 = 445,096.80/x
  3. Step 3: Cross multiply
    725,421.60x = 1,088,132.40 × 445,096.80
  4. Step 4: Simplify right side
    725,421.60x = 484,324,249,216.32
  5. Step 5: Solve for x
    x = 484,324,249,216.32/725,421.60
  6. Step 6: Final answer
    x = 667,645.20

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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.