Home / 3,987,851.40-5,981,777.10-1,328,459.40

Finding the Fourth Proportional to 3,987,851.40, 5,981,777.10 and 1,328,459.40

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Solution

The fourth proportional to 3,987,851.40, 5,981,777.10 and 1,328,459.40 is: 1,992,689.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987,851.40 : 5,981,777.10 = 1,328,459.40 : x
  2. Step 2: Convert to fraction form
    3,987,851.40/5,981,777.10 = 1,328,459.40/x
  3. Step 3: Cross multiply
    3,987,851.40x = 5,981,777.10 × 1,328,459.40
  4. Step 4: Simplify right side
    3,987,851.40x = 7,946,548,017,199.74
  5. Step 5: Solve for x
    x = 7,946,548,017,199.74/3,987,851.40
  6. Step 6: Final answer
    x = 1,992,689.10

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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.