Home / 2,115,975.55-2,920,939.77-1,428,578.16

Finding the Fourth Proportional to 2,115,975.55, 2,920,939.77 and 1,428,578.16

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Solution

The fourth proportional to 2,115,975.55, 2,920,939.77 and 1,428,578.16 is: 1,972,041.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,975.55 : 2,920,939.77 = 1,428,578.16 : x
  2. Step 2: Convert to fraction form
    2,115,975.55/2,920,939.77 = 1,428,578.16/x
  3. Step 3: Cross multiply
    2,115,975.55x = 2,920,939.77 × 1,428,578.16
  4. Step 4: Simplify right side
    2,115,975.55x = 4,172,790,754,954.53
  5. Step 5: Solve for x
    x = 4,172,790,754,954.53/2,115,975.55
  6. Step 6: Final answer
    x = 1,972,041.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.