Home / 678,786.31-936,731.13-372,868.90

Finding the Fourth Proportional to 678,786.31, 936,731.13 and 372,868.90

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Solution

The fourth proportional to 678,786.31, 936,731.13 and 372,868.90 is: 514,562.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,786.31 : 936,731.13 = 372,868.90 : x
  2. Step 2: Convert to fraction form
    678,786.31/936,731.13 = 372,868.90/x
  3. Step 3: Cross multiply
    678,786.31x = 936,731.13 × 372,868.90
  4. Step 4: Simplify right side
    678,786.31x = 349,277,909,665.27
  5. Step 5: Solve for x
    x = 349,277,909,665.27/678,786.31
  6. Step 6: Final answer
    x = 514,562.39

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1.5x scale

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.