Home / 3,987,688.40-5,981,532.60-3,719,999.60

Finding the Fourth Proportional to 3,987,688.40, 5,981,532.60 and 3,719,999.60

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Solution

The fourth proportional to 3,987,688.40, 5,981,532.60 and 3,719,999.60 is: 5,579,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987,688.40 : 5,981,532.60 = 3,719,999.60 : x
  2. Step 2: Convert to fraction form
    3,987,688.40/5,981,532.60 = 3,719,999.60/x
  3. Step 3: Cross multiply
    3,987,688.40x = 5,981,532.60 × 3,719,999.60
  4. Step 4: Simplify right side
    3,987,688.40x = 22,251,298,879,386.96
  5. Step 5: Solve for x
    x = 22,251,298,879,386.96/3,987,688.40
  6. Step 6: Final answer
    x = 5,579,999.40

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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.