Home / 961,044.40-1,441,129.20-428,291.20

Finding the Fourth Proportional to 961,044.40, 1,441,129.20 and 428,291.20

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Solution

The fourth proportional to 961,044.40, 1,441,129.20 and 428,291.20 is: 642,241.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,044.40 : 1,441,129.20 = 428,291.20 : x
  2. Step 2: Convert to fraction form
    961,044.40/1,441,129.20 = 428,291.20/x
  3. Step 3: Cross multiply
    961,044.40x = 1,441,129.20 × 428,291.20
  4. Step 4: Simplify right side
    961,044.40x = 617,222,954,423.04
  5. Step 5: Solve for x
    x = 617,222,954,423.04/961,044.40
  6. Step 6: Final answer
    x = 642,241.87

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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.