Home / 7,939,862.40-11,909,793.60-7,207,654.80

Finding the Fourth Proportional to 7,939,862.40, 11,909,793.60 and 7,207,654.80

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Solution

The fourth proportional to 7,939,862.40, 11,909,793.60 and 7,207,654.80 is: 10,811,482.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939,862.40 : 11,909,793.60 = 7,207,654.80 : x
  2. Step 2: Convert to fraction form
    7,939,862.40/11,909,793.60 = 7,207,654.80/x
  3. Step 3: Cross multiply
    7,939,862.40x = 11,909,793.60 × 7,207,654.80
  4. Step 4: Simplify right side
    7,939,862.40x = 85,841,681,008,049.28
  5. Step 5: Solve for x
    x = 85,841,681,008,049.28/7,939,862.40
  6. Step 6: Final answer
    x = 10,811,482.20

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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.