Home / 987,387.82-1,481,133.05-313,521.93

Finding the Fourth Proportional to 987,387.82, 1,481,133.05 and 313,521.93

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Solution

The fourth proportional to 987,387.82, 1,481,133.05 and 313,521.93 is: 470,299.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,387.82 : 1,481,133.05 = 313,521.93 : x
  2. Step 2: Convert to fraction form
    987,387.82/1,481,133.05 = 313,521.93/x
  3. Step 3: Cross multiply
    987,387.82x = 1,481,133.05 × 313,521.93
  4. Step 4: Simplify right side
    987,387.82x = 464,367,693,206.59
  5. Step 5: Solve for x
    x = 464,367,693,206.59/987,387.82
  6. Step 6: Final answer
    x = 470,299.19

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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.