Home / 858,266.56-1,287,520.17-259,159.78

Finding the Fourth Proportional to 858,266.56, 1,287,520.17 and 259,159.78

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Solution

The fourth proportional to 858,266.56, 1,287,520.17 and 259,159.78 is: 388,776.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,266.56 : 1,287,520.17 = 259,159.78 : x
  2. Step 2: Convert to fraction form
    858,266.56/1,287,520.17 = 259,159.78/x
  3. Step 3: Cross multiply
    858,266.56x = 1,287,520.17 × 259,159.78
  4. Step 4: Simplify right side
    858,266.56x = 333,673,444,002.76
  5. Step 5: Solve for x
    x = 333,673,444,002.76/858,266.56
  6. Step 6: Final answer
    x = 388,776.00

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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.