Home / 858,267.56-1,287,521.67-259,160.78

Finding the Fourth Proportional to 858,267.56, 1,287,521.67 and 259,160.78

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Solution

The fourth proportional to 858,267.56, 1,287,521.67 and 259,160.78 is: 388,777.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,267.56 : 1,287,521.67 = 259,160.78 : x
  2. Step 2: Convert to fraction form
    858,267.56/1,287,521.67 = 259,160.78/x
  3. Step 3: Cross multiply
    858,267.56x = 1,287,521.67 × 259,160.78
  4. Step 4: Simplify right side
    858,267.56x = 333,675,120,264.10
  5. Step 5: Solve for x
    x = 333,675,120,264.10/858,267.56
  6. Step 6: Final answer
    x = 388,777.50

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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.