Home / 858,112.70-1,287,377.15-259,038.07

Finding the Fourth Proportional to 858,112.70, 1,287,377.15 and 259,038.07

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Solution

The fourth proportional to 858,112.70, 1,287,377.15 and 259,038.07 is: 388,619.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,112.70 : 1,287,377.15 = 259,038.07 : x
  2. Step 2: Convert to fraction form
    858,112.70/1,287,377.15 = 259,038.07/x
  3. Step 3: Cross multiply
    858,112.70x = 1,287,377.15 × 259,038.07
  4. Step 4: Simplify right side
    858,112.70x = 333,479,687,784.47
  5. Step 5: Solve for x
    x = 333,479,687,784.47/858,112.70
  6. Step 6: Final answer
    x = 388,619.92

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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.