Home / 643,922.40-966,805.20-363,986.40

Finding the Fourth Proportional to 643,922.40, 966,805.20 and 363,986.40

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Solution

The fourth proportional to 643,922.40, 966,805.20 and 363,986.40 is: 546,500.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,922.40 : 966,805.20 = 363,986.40 : x
  2. Step 2: Convert to fraction form
    643,922.40/966,805.20 = 363,986.40/x
  3. Step 3: Cross multiply
    643,922.40x = 966,805.20 × 363,986.40
  4. Step 4: Simplify right side
    643,922.40x = 351,903,944,249.28
  5. Step 5: Solve for x
    x = 351,903,944,249.28/643,922.40
  6. Step 6: Final answer
    x = 546,500.55

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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.