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Finding the Fourth Proportional to 7,187,703.76, 9,919,169.30 and 3,924,647.82

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Solution

The fourth proportional to 7,187,703.76, 9,919,169.30 and 3,924,647.82 is: 5,416,089.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,187,703.76 : 9,919,169.30 = 3,924,647.82 : x
  2. Step 2: Convert to fraction form
    7,187,703.76/9,919,169.30 = 3,924,647.82/x
  3. Step 3: Cross multiply
    7,187,703.76x = 9,919,169.30 × 3,924,647.82
  4. Step 4: Simplify right side
    7,187,703.76x = 38,929,246,169,455.93
  5. Step 5: Solve for x
    x = 38,929,246,169,455.93/7,187,703.76
  6. Step 6: Final answer
    x = 5,416,089.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.