Home / 3,980,948.40-5,971,422.60-989,132.40

Finding the Fourth Proportional to 3,980,948.40, 5,971,422.60 and 989,132.40

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Solution

The fourth proportional to 3,980,948.40, 5,971,422.60 and 989,132.40 is: 1,483,698.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980,948.40 : 5,971,422.60 = 989,132.40 : x
  2. Step 2: Convert to fraction form
    3,980,948.40/5,971,422.60 = 989,132.40/x
  3. Step 3: Cross multiply
    3,980,948.40x = 5,971,422.60 × 989,132.40
  4. Step 4: Simplify right side
    3,980,948.40x = 5,906,527,567,752.24
  5. Step 5: Solve for x
    x = 5,906,527,567,752.24/3,980,948.40
  6. Step 6: Final answer
    x = 1,483,698.60

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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.