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Finding the Fourth Proportional to 8,974,878.40, 13,462,394.40 and 2,991,246.40

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Solution

The fourth proportional to 8,974,878.40, 13,462,394.40 and 2,991,246.40 is: 4,486,895.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,974,878.40 : 13,462,394.40 = 2,991,246.40 : x
  2. Step 2: Convert to fraction form
    8,974,878.40/13,462,394.40 = 2,991,246.40/x
  3. Step 3: Cross multiply
    8,974,878.40x = 13,462,394.40 × 2,991,246.40
  4. Step 4: Simplify right side
    8,974,878.40x = 40,269,338,784,380.16
  5. Step 5: Solve for x
    x = 40,269,338,784,380.16/8,974,878.40
  6. Step 6: Final answer
    x = 4,486,895.20

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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.