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Finding the Fourth Proportional to 8,237,648.40, 12,358,805.40 and 2,558,446.80

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Solution

The fourth proportional to 8,237,648.40, 12,358,805.40 and 2,558,446.80 is: 3,838,394.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,237,648.40 : 12,358,805.40 = 2,558,446.80 : x
  2. Step 2: Convert to fraction form
    8,237,648.40/12,358,805.40 = 2,558,446.80/x
  3. Step 3: Cross multiply
    8,237,648.40x = 12,358,805.40 × 2,558,446.80
  4. Step 4: Simplify right side
    8,237,648.40x = 31,619,346,127,452.72
  5. Step 5: Solve for x
    x = 31,619,346,127,452.72/8,237,648.40
  6. Step 6: Final answer
    x = 3,838,394.72

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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.