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Finding the Fourth Proportional to 7,891,657.70, 11,837,486.55 and 5,199,023.30

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Solution

The fourth proportional to 7,891,657.70, 11,837,486.55 and 5,199,023.30 is: 7,798,534.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891,657.70 : 11,837,486.55 = 5,199,023.30 : x
  2. Step 2: Convert to fraction form
    7,891,657.70/11,837,486.55 = 5,199,023.30/x
  3. Step 3: Cross multiply
    7,891,657.70x = 11,837,486.55 × 5,199,023.30
  4. Step 4: Simplify right side
    7,891,657.70x = 61,543,368,386,886.62
  5. Step 5: Solve for x
    x = 61,543,368,386,886.62/7,891,657.70
  6. Step 6: Final answer
    x = 7,798,534.95

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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.