Home / 500,279.22-690,389.73-296,341.74

Finding the Fourth Proportional to 500,279.22, 690,389.73 and 296,341.74

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Solution

The fourth proportional to 500,279.22, 690,389.73 and 296,341.74 is: 408,954.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,279.22 : 690,389.73 = 296,341.74 : x
  2. Step 2: Convert to fraction form
    500,279.22/690,389.73 = 296,341.74/x
  3. Step 3: Cross multiply
    500,279.22x = 690,389.73 × 296,341.74
  4. Step 4: Simplify right side
    500,279.22x = 204,591,293,866.33
  5. Step 5: Solve for x
    x = 204,591,293,866.33/500,279.22
  6. Step 6: Final answer
    x = 408,954.21

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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.