Home / 393,320,026.20-542,781,554.40-217,107,974.64

Finding the Fourth Proportional to 393,320,026.20, 542,781,554.40 and 217,107,974.64

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Solution

The fourth proportional to 393,320,026.20, 542,781,554.40 and 217,107,974.64 is: 299,608,959.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,320,026.20 : 542,781,554.40 = 217,107,974.64 : x
  2. Step 2: Convert to fraction form
    393,320,026.20/542,781,554.40 = 217,107,974.64/x
  3. Step 3: Cross multiply
    393,320,026.20x = 542,781,554.40 × 217,107,974.64
  4. Step 4: Simplify right side
    393,320,026.20x = 117,842,203,947,734,960
  5. Step 5: Solve for x
    x = 117,842,203,947,734,960/393,320,026.20
  6. Step 6: Final answer
    x = 299,608,959.87

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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.