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Finding the Fourth Proportional to 485,336,695.56, 726,849,449.04 and 309,916,368.24

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Solution

The fourth proportional to 485,336,695.56, 726,849,449.04 and 309,916,368.24 is: 464,136,636.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,336,695.56 : 726,849,449.04 = 309,916,368.24 : x
  2. Step 2: Convert to fraction form
    485,336,695.56/726,849,449.04 = 309,916,368.24/x
  3. Step 3: Cross multiply
    485,336,695.56x = 726,849,449.04 × 309,916,368.24
  4. Step 4: Simplify right side
    485,336,695.56x = 225,262,541,503,721,760
  5. Step 5: Solve for x
    x = 225,262,541,503,721,760/485,336,695.56
  6. Step 6: Final answer
    x = 464,136,636.62

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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.