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Finding the Fourth Proportional to 587,041.20, 879,395.40 and 320,324.40

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Solution

The fourth proportional to 587,041.20, 879,395.40 and 320,324.40 is: 479,850.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,041.20 : 879,395.40 = 320,324.40 : x
  2. Step 2: Convert to fraction form
    587,041.20/879,395.40 = 320,324.40/x
  3. Step 3: Cross multiply
    587,041.20x = 879,395.40 × 320,324.40
  4. Step 4: Simplify right side
    587,041.20x = 281,691,803,867.76
  5. Step 5: Solve for x
    x = 281,691,803,867.76/587,041.20
  6. Step 6: Final answer
    x = 479,850.14

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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.