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Finding the Fourth Proportional to 8,986,538.40, 13,479,807.60 and 8,930,551.20

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Solution

The fourth proportional to 8,986,538.40, 13,479,807.60 and 8,930,551.20 is: 13,395,826.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986,538.40 : 13,479,807.60 = 8,930,551.20 : x
  2. Step 2: Convert to fraction form
    8,986,538.40/13,479,807.60 = 8,930,551.20/x
  3. Step 3: Cross multiply
    8,986,538.40x = 13,479,807.60 × 8,930,551.20
  4. Step 4: Simplify right side
    8,986,538.40x = 120,382,111,937,949.11
  5. Step 5: Solve for x
    x = 120,382,111,937,949.11/8,986,538.40
  6. Step 6: Final answer
    x = 13,395,826.80

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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.