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Finding the Fourth Proportional to 483,610.60, 725,415.90 and 431,079.40

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Solution

The fourth proportional to 483,610.60, 725,415.90 and 431,079.40 is: 646,619.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,610.60 : 725,415.90 = 431,079.40 : x
  2. Step 2: Convert to fraction form
    483,610.60/725,415.90 = 431,079.40/x
  3. Step 3: Cross multiply
    483,610.60x = 725,415.90 × 431,079.40
  4. Step 4: Simplify right side
    483,610.60x = 312,711,850,922.46
  5. Step 5: Solve for x
    x = 312,711,850,922.46/483,610.60
  6. Step 6: Final answer
    x = 646,619.10

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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.