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Finding the Fourth Proportional to 8,974,862.40, 13,462,370.40 and 2,991,230.40

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Solution

The fourth proportional to 8,974,862.40, 13,462,370.40 and 2,991,230.40 is: 4,486,871.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,974,862.40 : 13,462,370.40 = 2,991,230.40 : x
  2. Step 2: Convert to fraction form
    8,974,862.40/13,462,370.40 = 2,991,230.40/x
  3. Step 3: Cross multiply
    8,974,862.40x = 13,462,370.40 × 2,991,230.40
  4. Step 4: Simplify right side
    8,974,862.40x = 40,269,051,596,540.16
  5. Step 5: Solve for x
    x = 40,269,051,596,540.16/8,974,862.40
  6. Step 6: Final answer
    x = 4,486,871.20

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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.