Home / 858,076.12-1,287,123.09-259,042.24

Finding the Fourth Proportional to 858,076.12, 1,287,123.09 and 259,042.24

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Solution

The fourth proportional to 858,076.12, 1,287,123.09 and 259,042.24 is: 388,566.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,076.12 : 1,287,123.09 = 259,042.24 : x
  2. Step 2: Convert to fraction form
    858,076.12/1,287,123.09 = 259,042.24/x
  3. Step 3: Cross multiply
    858,076.12x = 1,287,123.09 × 259,042.24
  4. Step 4: Simplify right side
    858,076.12x = 333,419,248,389.32
  5. Step 5: Solve for x
    x = 333,419,248,389.32/858,076.12
  6. Step 6: Final answer
    x = 388,566.05

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1.5x scale

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.