Home / 3,120,672.40-4,681,008.60-1,918,697.20

Finding the Fourth Proportional to 3,120,672.40, 4,681,008.60 and 1,918,697.20

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Solution

The fourth proportional to 3,120,672.40, 4,681,008.60 and 1,918,697.20 is: 2,878,045.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,672.40 : 4,681,008.60 = 1,918,697.20 : x
  2. Step 2: Convert to fraction form
    3,120,672.40/4,681,008.60 = 1,918,697.20/x
  3. Step 3: Cross multiply
    3,120,672.40x = 4,681,008.60 × 1,918,697.20
  4. Step 4: Simplify right side
    3,120,672.40x = 8,981,438,093,995.92
  5. Step 5: Solve for x
    x = 8,981,438,093,995.92/3,120,672.40
  6. Step 6: Final answer
    x = 2,878,045.80

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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.