Home / 658,910.20-987,235.89-442,363.36

Finding the Fourth Proportional to 658,910.20, 987,235.89 and 442,363.36

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Solution

The fourth proportional to 658,910.20, 987,235.89 and 442,363.36 is: 662,786.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,910.20 : 987,235.89 = 442,363.36 : x
  2. Step 2: Convert to fraction form
    658,910.20/987,235.89 = 442,363.36/x
  3. Step 3: Cross multiply
    658,910.20x = 987,235.89 × 442,363.36
  4. Step 4: Simplify right side
    658,910.20x = 436,716,985,412.99
  5. Step 5: Solve for x
    x = 436,716,985,412.99/658,910.20
  6. Step 6: Final answer
    x = 662,786.80

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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.