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Finding the Fourth Proportional to 6,652,992.40, 9,979,488.60 and 6,391,718.80

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Solution

The fourth proportional to 6,652,992.40, 9,979,488.60 and 6,391,718.80 is: 9,587,578.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,652,992.40 : 9,979,488.60 = 6,391,718.80 : x
  2. Step 2: Convert to fraction form
    6,652,992.40/9,979,488.60 = 6,391,718.80/x
  3. Step 3: Cross multiply
    6,652,992.40x = 9,979,488.60 × 6,391,718.80
  4. Step 4: Simplify right side
    6,652,992.40x = 63,786,084,899,005.67
  5. Step 5: Solve for x
    x = 63,786,084,899,005.67/6,652,992.40
  6. Step 6: Final answer
    x = 9,587,578.20

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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.