Home / 394,844,164.91-545,452,521.24-315,354,862.79

Finding the Fourth Proportional to 394,844,164.91, 545,452,521.24 and 315,354,862.79

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Solution

The fourth proportional to 394,844,164.91, 545,452,521.24 and 315,354,862.79 is: 435,643,021.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,844,164.91 : 545,452,521.24 = 315,354,862.79 : x
  2. Step 2: Convert to fraction form
    394,844,164.91/545,452,521.24 = 315,354,862.79/x
  3. Step 3: Cross multiply
    394,844,164.91x = 545,452,521.24 × 315,354,862.79
  4. Step 4: Simplify right side
    394,844,164.91x = 172,011,104,994,099,776
  5. Step 5: Solve for x
    x = 172,011,104,994,099,776/394,844,164.91
  6. Step 6: Final answer
    x = 435,643,021.43

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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.