Home / 516,721.50-713,142.54-290,367

Finding the Fourth Proportional to 516,721.50, 713,142.54 and 290,367

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Solution

The fourth proportional to 516,721.50, 713,142.54 and 290,367 is: 400,744.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,721.50 : 713,142.54 = 290,367 : x
  2. Step 2: Convert to fraction form
    516,721.50/713,142.54 = 290,367/x
  3. Step 3: Cross multiply
    516,721.50x = 713,142.54 × 290,367
  4. Step 4: Simplify right side
    516,721.50x = 207,073,059,912.18
  5. Step 5: Solve for x
    x = 207,073,059,912.18/516,721.50
  6. Step 6: Final answer
    x = 400,744.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.