Home / 547,979.76-756,209.28-306,262.20

Finding the Fourth Proportional to 547,979.76, 756,209.28 and 306,262.20

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Solution

The fourth proportional to 547,979.76, 756,209.28 and 306,262.20 is: 422,640.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,979.76 : 756,209.28 = 306,262.20 : x
  2. Step 2: Convert to fraction form
    547,979.76/756,209.28 = 306,262.20/x
  3. Step 3: Cross multiply
    547,979.76x = 756,209.28 × 306,262.20
  4. Step 4: Simplify right side
    547,979.76x = 231,598,317,753.22
  5. Step 5: Solve for x
    x = 231,598,317,753.22/547,979.76
  6. Step 6: Final answer
    x = 422,640.28

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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.