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Finding the Fourth Proportional to 866,600,837.10, 1,195,808,263.68 and 485,143,760.07

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Solution

The fourth proportional to 866,600,837.10, 1,195,808,263.68 and 485,143,760.07 is: 669,441,907.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,600,837.10 : 1,195,808,263.68 = 485,143,760.07 : x
  2. Step 2: Convert to fraction form
    866,600,837.10/1,195,808,263.68 = 485,143,760.07/x
  3. Step 3: Cross multiply
    866,600,837.10x = 1,195,808,263.68 × 485,143,760.07
  4. Step 4: Simplify right side
    866,600,837.10x = 580,138,917,364,493,184
  5. Step 5: Solve for x
    x = 580,138,917,364,493,184/866,600,837.10
  6. Step 6: Final answer
    x = 669,441,907.43

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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.