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Finding the Fourth Proportional to 483,079.80, 724,619.70 and 439,534.20

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Solution

The fourth proportional to 483,079.80, 724,619.70 and 439,534.20 is: 659,301.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,079.80 : 724,619.70 = 439,534.20 : x
  2. Step 2: Convert to fraction form
    483,079.80/724,619.70 = 439,534.20/x
  3. Step 3: Cross multiply
    483,079.80x = 724,619.70 × 439,534.20
  4. Step 4: Simplify right side
    483,079.80x = 318,495,140,143.74
  5. Step 5: Solve for x
    x = 318,495,140,143.74/483,079.80
  6. Step 6: Final answer
    x = 659,301.30

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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.