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Finding the Fourth Proportional to 659,692,669.32, 910,685,833.92 and 381,180,318.84

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Solution

The fourth proportional to 659,692,669.32, 910,685,833.92 and 381,180,318.84 is: 526,207,933.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,692,669.32 : 910,685,833.92 = 381,180,318.84 : x
  2. Step 2: Convert to fraction form
    659,692,669.32/910,685,833.92 = 381,180,318.84/x
  3. Step 3: Cross multiply
    659,692,669.32x = 910,685,833.92 × 381,180,318.84
  4. Step 4: Simplify right side
    659,692,669.32x = 347,135,516,536,696,832
  5. Step 5: Solve for x
    x = 347,135,516,536,696,832/659,692,669.32
  6. Step 6: Final answer
    x = 526,207,933.91

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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.