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Finding the Fourth Proportional to 522,041.80, 783,062.70 and 321,712.60

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Solution

The fourth proportional to 522,041.80, 783,062.70 and 321,712.60 is: 482,568.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,041.80 : 783,062.70 = 321,712.60 : x
  2. Step 2: Convert to fraction form
    522,041.80/783,062.70 = 321,712.60/x
  3. Step 3: Cross multiply
    522,041.80x = 783,062.70 × 321,712.60
  4. Step 4: Simplify right side
    522,041.80x = 251,921,137,180.02
  5. Step 5: Solve for x
    x = 251,921,137,180.02/522,041.80
  6. Step 6: Final answer
    x = 482,568.90

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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.