Home / 690,198.40-1,034,947.52-315,900.80

Finding the Fourth Proportional to 690,198.40, 1,034,947.52 and 315,900.80

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Solution

The fourth proportional to 690,198.40, 1,034,947.52 and 315,900.80 is: 473,690.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,198.40 : 1,034,947.52 = 315,900.80 : x
  2. Step 2: Convert to fraction form
    690,198.40/1,034,947.52 = 315,900.80/x
  3. Step 3: Cross multiply
    690,198.40x = 1,034,947.52 × 315,900.80
  4. Step 4: Simplify right side
    690,198.40x = 326,940,749,526.02
  5. Step 5: Solve for x
    x = 326,940,749,526.02/690,198.40
  6. Step 6: Final answer
    x = 473,690.97

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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.