Home / 500,210.97-690,388.29-379,141.08

Finding the Fourth Proportional to 500,210.97, 690,388.29 and 379,141.08

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Solution

The fourth proportional to 500,210.97, 690,388.29 and 379,141.08 is: 523,288.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,210.97 : 690,388.29 = 379,141.08 : x
  2. Step 2: Convert to fraction form
    500,210.97/690,388.29 = 379,141.08/x
  3. Step 3: Cross multiply
    500,210.97x = 690,388.29 × 379,141.08
  4. Step 4: Simplify right side
    500,210.97x = 261,754,561,889.95
  5. Step 5: Solve for x
    x = 261,754,561,889.95/500,210.97
  6. Step 6: Final answer
    x = 523,288.33

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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.