Home / 578,782.40-867,007.20-329,172.80

Finding the Fourth Proportional to 578,782.40, 867,007.20 and 329,172.80

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Solution

The fourth proportional to 578,782.40, 867,007.20 and 329,172.80 is: 493,095.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,782.40 : 867,007.20 = 329,172.80 : x
  2. Step 2: Convert to fraction form
    578,782.40/867,007.20 = 329,172.80/x
  3. Step 3: Cross multiply
    578,782.40x = 867,007.20 × 329,172.80
  4. Step 4: Simplify right side
    578,782.40x = 285,395,187,644.16
  5. Step 5: Solve for x
    x = 285,395,187,644.16/578,782.40
  6. Step 6: Final answer
    x = 493,095.83

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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.