Home / 509,300.40-763,976.52-189,381.36

Finding the Fourth Proportional to 509,300.40, 763,976.52 and 189,381.36

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Solution

The fourth proportional to 509,300.40, 763,976.52 and 189,381.36 is: 284,081.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,300.40 : 763,976.52 = 189,381.36 : x
  2. Step 2: Convert to fraction form
    509,300.40/763,976.52 = 189,381.36/x
  3. Step 3: Cross multiply
    509,300.40x = 763,976.52 × 189,381.36
  4. Step 4: Simplify right side
    509,300.40x = 144,682,912,365.67
  5. Step 5: Solve for x
    x = 144,682,912,365.67/509,300.40
  6. Step 6: Final answer
    x = 284,081.68

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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.