Home / 353,679,790.56-487,747,048.32-279,517,521.84

Finding the Fourth Proportional to 353,679,790.56, 487,747,048.32 and 279,517,521.84

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Solution

The fourth proportional to 353,679,790.56, 487,747,048.32 and 279,517,521.84 is: 385,472,537.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,679,790.56 : 487,747,048.32 = 279,517,521.84 : x
  2. Step 2: Convert to fraction form
    353,679,790.56/487,747,048.32 = 279,517,521.84/x
  3. Step 3: Cross multiply
    353,679,790.56x = 487,747,048.32 × 279,517,521.84
  4. Step 4: Simplify right side
    353,679,790.56x = 136,333,846,231,181,120
  5. Step 5: Solve for x
    x = 136,333,846,231,181,120/353,679,790.56
  6. Step 6: Final answer
    x = 385,472,537.22

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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.