Home / 2,991,470.40-4,486,544.64-861,079.68

Finding the Fourth Proportional to 2,991,470.40, 4,486,544.64 and 861,079.68

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Solution

The fourth proportional to 2,991,470.40, 4,486,544.64 and 861,079.68 is: 1,291,429.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991,470.40 : 4,486,544.64 = 861,079.68 : x
  2. Step 2: Convert to fraction form
    2,991,470.40/4,486,544.64 = 861,079.68/x
  3. Step 3: Cross multiply
    2,991,470.40x = 4,486,544.64 × 861,079.68
  4. Step 4: Simplify right side
    2,991,470.40x = 3,863,272,422,916.92
  5. Step 5: Solve for x
    x = 3,863,272,422,916.92/2,991,470.40
  6. Step 6: Final answer
    x = 1,291,429.27

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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.