Home / 7,128,045.20-10,692,067.80-6,986,327.60

Finding the Fourth Proportional to 7,128,045.20, 10,692,067.80 and 6,986,327.60

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Solution

The fourth proportional to 7,128,045.20, 10,692,067.80 and 6,986,327.60 is: 10,479,491.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,045.20 : 10,692,067.80 = 6,986,327.60 : x
  2. Step 2: Convert to fraction form
    7,128,045.20/10,692,067.80 = 6,986,327.60/x
  3. Step 3: Cross multiply
    7,128,045.20x = 10,692,067.80 × 6,986,327.60
  4. Step 4: Simplify right side
    7,128,045.20x = 74,698,288,372,211.28
  5. Step 5: Solve for x
    x = 74,698,288,372,211.28/7,128,045.20
  6. Step 6: Final answer
    x = 10,479,491.40

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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.