Home / 908,720,385.20-1,363,080,569.92-218,627,631.12

Finding the Fourth Proportional to 908,720,385.20, 1,363,080,569.92 and 218,627,631.12

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Solution

The fourth proportional to 908,720,385.20, 1,363,080,569.92 and 218,627,631.12 is: 327,941,444.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,720,385.20 : 1,363,080,569.92 = 218,627,631.12 : x
  2. Step 2: Convert to fraction form
    908,720,385.20/1,363,080,569.92 = 218,627,631.12/x
  3. Step 3: Cross multiply
    908,720,385.20x = 1,363,080,569.92 × 218,627,631.12
  4. Step 4: Simplify right side
    908,720,385.20x = 298,007,076,027,309,120
  5. Step 5: Solve for x
    x = 298,007,076,027,309,120/908,720,385.20
  6. Step 6: Final answer
    x = 327,941,444.78

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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.