Home / 513,943.70-769,792.83-213,513.38

Finding the Fourth Proportional to 513,943.70, 769,792.83 and 213,513.38

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Solution

The fourth proportional to 513,943.70, 769,792.83 and 213,513.38 is: 319,803.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,943.70 : 769,792.83 = 213,513.38 : x
  2. Step 2: Convert to fraction form
    513,943.70/769,792.83 = 213,513.38/x
  3. Step 3: Cross multiply
    513,943.70x = 769,792.83 × 213,513.38
  4. Step 4: Simplify right side
    513,943.70x = 164,361,069,033.07
  5. Step 5: Solve for x
    x = 164,361,069,033.07/513,943.70
  6. Step 6: Final answer
    x = 319,803.65

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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.