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Finding the Fourth Proportional to 486,026.20, 729,039.30 and 342,947.80

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Solution

The fourth proportional to 486,026.20, 729,039.30 and 342,947.80 is: 514,421.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,026.20 : 729,039.30 = 342,947.80 : x
  2. Step 2: Convert to fraction form
    486,026.20/729,039.30 = 342,947.80/x
  3. Step 3: Cross multiply
    486,026.20x = 729,039.30 × 342,947.80
  4. Step 4: Simplify right side
    486,026.20x = 250,022,424,048.54
  5. Step 5: Solve for x
    x = 250,022,424,048.54/486,026.20
  6. Step 6: Final answer
    x = 514,421.70

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Similar ratio
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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.