Home / 3,120,963.30-4,681,574.55-990,987.30

Finding the Fourth Proportional to 3,120,963.30, 4,681,574.55 and 990,987.30

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Solution

The fourth proportional to 3,120,963.30, 4,681,574.55 and 990,987.30 is: 1,486,522.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,963.30 : 4,681,574.55 = 990,987.30 : x
  2. Step 2: Convert to fraction form
    3,120,963.30/4,681,574.55 = 990,987.30/x
  3. Step 3: Cross multiply
    3,120,963.30x = 4,681,574.55 × 990,987.30
  4. Step 4: Simplify right side
    3,120,963.30x = 4,639,380,923,053.22
  5. Step 5: Solve for x
    x = 4,639,380,923,053.22/3,120,963.30
  6. Step 6: Final answer
    x = 1,486,522.10

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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.