Home / 2,987,422.74-4,481,136.86-1,280,458.35

Finding the Fourth Proportional to 2,987,422.74, 4,481,136.86 and 1,280,458.35

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Solution

The fourth proportional to 2,987,422.74, 4,481,136.86 and 1,280,458.35 is: 1,920,688.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987,422.74 : 4,481,136.86 = 1,280,458.35 : x
  2. Step 2: Convert to fraction form
    2,987,422.74/4,481,136.86 = 1,280,458.35/x
  3. Step 3: Cross multiply
    2,987,422.74x = 4,481,136.86 × 1,280,458.35
  4. Step 4: Simplify right side
    2,987,422.74x = 5,737,909,103,477.49
  5. Step 5: Solve for x
    x = 5,737,909,103,477.49/2,987,422.74
  6. Step 6: Final answer
    x = 1,920,688.70

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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.