Home / 987,486.12-1,481,077.91-313,479.45

Finding the Fourth Proportional to 987,486.12, 1,481,077.91 and 313,479.45

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Solution

The fourth proportional to 987,486.12, 1,481,077.91 and 313,479.45 is: 470,171.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,486.12 : 1,481,077.91 = 313,479.45 : x
  2. Step 2: Convert to fraction form
    987,486.12/1,481,077.91 = 313,479.45/x
  3. Step 3: Cross multiply
    987,486.12x = 1,481,077.91 × 313,479.45
  4. Step 4: Simplify right side
    987,486.12x = 464,287,489,417.65
  5. Step 5: Solve for x
    x = 464,287,489,417.65/987,486.12
  6. Step 6: Final answer
    x = 470,171.15

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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.