Home / 858,117.32-1,287,384.08-259,042.68

Finding the Fourth Proportional to 858,117.32, 1,287,384.08 and 259,042.68

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Solution

The fourth proportional to 858,117.32, 1,287,384.08 and 259,042.68 is: 388,626.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,117.32 : 1,287,384.08 = 259,042.68 : x
  2. Step 2: Convert to fraction form
    858,117.32/1,287,384.08 = 259,042.68/x
  3. Step 3: Cross multiply
    858,117.32x = 1,287,384.08 × 259,042.68
  4. Step 4: Simplify right side
    858,117.32x = 333,487,422,272.53
  5. Step 5: Solve for x
    x = 333,487,422,272.53/858,117.32
  6. Step 6: Final answer
    x = 388,626.84

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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.