Home / 438,859,535.28-658,188,568.56-261,646,820.19

Finding the Fourth Proportional to 438,859,535.28, 658,188,568.56 and 261,646,820.19

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Solution

The fourth proportional to 438,859,535.28, 658,188,568.56 and 261,646,820.19 is: 392,410,172.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,859,535.28 : 658,188,568.56 = 261,646,820.19 : x
  2. Step 2: Convert to fraction form
    438,859,535.28/658,188,568.56 = 261,646,820.19/x
  3. Step 3: Cross multiply
    438,859,535.28x = 658,188,568.56 × 261,646,820.19
  4. Step 4: Simplify right side
    438,859,535.28x = 172,212,946,049,131,776
  5. Step 5: Solve for x
    x = 172,212,946,049,131,776/438,859,535.28
  6. Step 6: Final answer
    x = 392,410,172.74

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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.