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Finding the Fourth Proportional to 808,517,819.10, 1,212,776,728.65 and 801,715,374.30

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Solution

The fourth proportional to 808,517,819.10, 1,212,776,728.65 and 801,715,374.30 is: 1,202,573,061.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,517,819.10 : 1,212,776,728.65 = 801,715,374.30 : x
  2. Step 2: Convert to fraction form
    808,517,819.10/1,212,776,728.65 = 801,715,374.30/x
  3. Step 3: Cross multiply
    808,517,819.10x = 1,212,776,728.65 × 801,715,374.30
  4. Step 4: Simplify right side
    808,517,819.10x = 972,301,748,951,964,288
  5. Step 5: Solve for x
    x = 972,301,748,951,964,288/808,517,819.10
  6. Step 6: Final answer
    x = 1,202,573,061.45

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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.