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Finding the Fourth Proportional to 8,456,859.20, 12,659,368.80 and 4,658,715.20

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Solution

The fourth proportional to 8,456,859.20, 12,659,368.80 and 4,658,715.20 is: 6,973,793.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,456,859.20 : 12,659,368.80 = 4,658,715.20 : x
  2. Step 2: Convert to fraction form
    8,456,859.20/12,659,368.80 = 4,658,715.20/x
  3. Step 3: Cross multiply
    8,456,859.20x = 12,659,368.80 × 4,658,715.20
  4. Step 4: Simplify right side
    8,456,859.20x = 58,976,393,850,965.77
  5. Step 5: Solve for x
    x = 58,976,393,850,965.77/8,456,859.20
  6. Step 6: Final answer
    x = 6,973,793.99

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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.