Home / 2,987,394.30-4,481,084.55-1,280,430.78

Finding the Fourth Proportional to 2,987,394.30, 4,481,084.55 and 1,280,430.78

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Solution

The fourth proportional to 2,987,394.30, 4,481,084.55 and 1,280,430.78 is: 1,920,643.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987,394.30 : 4,481,084.55 = 1,280,430.78 : x
  2. Step 2: Convert to fraction form
    2,987,394.30/4,481,084.55 = 1,280,430.78/x
  3. Step 3: Cross multiply
    2,987,394.30x = 4,481,084.55 × 1,280,430.78
  4. Step 4: Simplify right side
    2,987,394.30x = 5,737,718,585,602.45
  5. Step 5: Solve for x
    x = 5,737,718,585,602.45/2,987,394.30
  6. Step 6: Final answer
    x = 1,920,643.21

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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.