Home / 987,375.36-1,480,065.92-388,756.64

Finding the Fourth Proportional to 987,375.36, 1,480,065.92 and 388,756.64

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Solution

The fourth proportional to 987,375.36, 1,480,065.92 and 388,756.64 is: 582,742.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,375.36 : 1,480,065.92 = 388,756.64 : x
  2. Step 2: Convert to fraction form
    987,375.36/1,480,065.92 = 388,756.64/x
  3. Step 3: Cross multiply
    987,375.36x = 1,480,065.92 × 388,756.64
  4. Step 4: Simplify right side
    987,375.36x = 575,385,454,037.71
  5. Step 5: Solve for x
    x = 575,385,454,037.71/987,375.36
  6. Step 6: Final answer
    x = 582,742.37

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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.