Home / 789,500.20-1,182,500.70-611,429.80

Finding the Fourth Proportional to 789,500.20, 1,182,500.70 and 611,429.80

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Solution

The fourth proportional to 789,500.20, 1,182,500.70 and 611,429.80 is: 915,789.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,500.20 : 1,182,500.70 = 611,429.80 : x
  2. Step 2: Convert to fraction form
    789,500.20/1,182,500.70 = 611,429.80/x
  3. Step 3: Cross multiply
    789,500.20x = 1,182,500.70 × 611,429.80
  4. Step 4: Simplify right side
    789,500.20x = 723,016,166,500.86
  5. Step 5: Solve for x
    x = 723,016,166,500.86/789,500.20
  6. Step 6: Final answer
    x = 915,789.72

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1.5x scale

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.