Home / 643,918.40-966,799.20-363,982.40

Finding the Fourth Proportional to 643,918.40, 966,799.20 and 363,982.40

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Solution

The fourth proportional to 643,918.40, 966,799.20 and 363,982.40 is: 546,494.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,918.40 : 966,799.20 = 363,982.40 : x
  2. Step 2: Convert to fraction form
    643,918.40/966,799.20 = 363,982.40/x
  3. Step 3: Cross multiply
    643,918.40x = 966,799.20 × 363,982.40
  4. Step 4: Simplify right side
    643,918.40x = 351,897,893,134.08
  5. Step 5: Solve for x
    x = 351,897,893,134.08/643,918.40
  6. Step 6: Final answer
    x = 546,494.55

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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.