Home / 643,926.40-966,811.20-363,990.40

Finding the Fourth Proportional to 643,926.40, 966,811.20 and 363,990.40

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Solution

The fourth proportional to 643,926.40, 966,811.20 and 363,990.40 is: 546,506.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,926.40 : 966,811.20 = 363,990.40 : x
  2. Step 2: Convert to fraction form
    643,926.40/966,811.20 = 363,990.40/x
  3. Step 3: Cross multiply
    643,926.40x = 966,811.20 × 363,990.40
  4. Step 4: Simplify right side
    643,926.40x = 351,909,995,412.48
  5. Step 5: Solve for x
    x = 351,909,995,412.48/643,926.40
  6. Step 6: Final answer
    x = 546,506.55

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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.