Home / 643,865.52-965,944.08-344,188.20

Finding the Fourth Proportional to 643,865.52, 965,944.08 and 344,188.20

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Solution

The fourth proportional to 643,865.52, 965,944.08 and 344,188.20 is: 516,360.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,865.52 : 965,944.08 = 344,188.20 : x
  2. Step 2: Convert to fraction form
    643,865.52/965,944.08 = 344,188.20/x
  3. Step 3: Cross multiply
    643,865.52x = 965,944.08 × 344,188.20
  4. Step 4: Simplify right side
    643,865.52x = 332,466,554,195.86
  5. Step 5: Solve for x
    x = 332,466,554,195.86/643,865.52
  6. Step 6: Final answer
    x = 516,360.24

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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.