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Finding the Fourth Proportional to 479,101,203.80, 718,651,805.70 and 206,471,970.80

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Solution

The fourth proportional to 479,101,203.80, 718,651,805.70 and 206,471,970.80 is: 309,707,956.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,101,203.80 : 718,651,805.70 = 206,471,970.80 : x
  2. Step 2: Convert to fraction form
    479,101,203.80/718,651,805.70 = 206,471,970.80/x
  3. Step 3: Cross multiply
    479,101,203.80x = 718,651,805.70 × 206,471,970.80
  4. Step 4: Simplify right side
    479,101,203.80x = 148,381,454,641,857,696
  5. Step 5: Solve for x
    x = 148,381,454,641,857,696/479,101,203.80
  6. Step 6: Final answer
    x = 309,707,956.20

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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.