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Finding the Fourth Proportional to 7,855,862.40, 11,758,910.40 and 5,616,374.40

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Solution

The fourth proportional to 7,855,862.40, 11,758,910.40 and 5,616,374.40 is: 8,406,771.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855,862.40 : 11,758,910.40 = 5,616,374.40 : x
  2. Step 2: Convert to fraction form
    7,855,862.40/11,758,910.40 = 5,616,374.40/x
  3. Step 3: Cross multiply
    7,855,862.40x = 11,758,910.40 × 5,616,374.40
  4. Step 4: Simplify right side
    7,855,862.40x = 66,042,443,342,453.77
  5. Step 5: Solve for x
    x = 66,042,443,342,453.77/7,855,862.40
  6. Step 6: Final answer
    x = 8,406,771.91

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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.