Home / 987,394.66-1,480,960.77-388,194.93

Finding the Fourth Proportional to 987,394.66, 1,480,960.77 and 388,194.93

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Solution

The fourth proportional to 987,394.66, 1,480,960.77 and 388,194.93 is: 582,240.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,394.66 : 1,480,960.77 = 388,194.93 : x
  2. Step 2: Convert to fraction form
    987,394.66/1,480,960.77 = 388,194.93/x
  3. Step 3: Cross multiply
    987,394.66x = 1,480,960.77 × 388,194.93
  4. Step 4: Simplify right side
    987,394.66x = 574,901,460,987.17
  5. Step 5: Solve for x
    x = 574,901,460,987.17/987,394.66
  6. Step 6: Final answer
    x = 582,240.81

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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.