Home / 412,376.41-618,661.45-128,052.28

Finding the Fourth Proportional to 412,376.41, 618,661.45 and 128,052.28

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Solution

The fourth proportional to 412,376.41, 618,661.45 and 128,052.28 is: 192,108.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,376.41 : 618,661.45 = 128,052.28 : x
  2. Step 2: Convert to fraction form
    412,376.41/618,661.45 = 128,052.28/x
  3. Step 3: Cross multiply
    412,376.41x = 618,661.45 × 128,052.28
  4. Step 4: Simplify right side
    412,376.41x = 79,221,006,127.30
  5. Step 5: Solve for x
    x = 79,221,006,127.30/412,376.41
  6. Step 6: Final answer
    x = 192,108.48

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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.