Home / 392,695,634.40-541,921,612.32-216,479,758.56

Finding the Fourth Proportional to 392,695,634.40, 541,921,612.32 and 216,479,758.56

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Solution

The fourth proportional to 392,695,634.40, 541,921,612.32 and 216,479,758.56 is: 298,742,969.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,695,634.40 : 541,921,612.32 = 216,479,758.56 : x
  2. Step 2: Convert to fraction form
    392,695,634.40/541,921,612.32 = 216,479,758.56/x
  3. Step 3: Cross multiply
    392,695,634.40x = 541,921,612.32 × 216,479,758.56
  4. Step 4: Simplify right side
    392,695,634.40x = 117,315,059,793,479,536
  5. Step 5: Solve for x
    x = 117,315,059,793,479,536/392,695,634.40
  6. Step 6: Final answer
    x = 298,742,969.15

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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.