Home / 563,755.08-777,976.20-309,105.84

Finding the Fourth Proportional to 563,755.08, 777,976.20 and 309,105.84

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Solution

The fourth proportional to 563,755.08, 777,976.20 and 309,105.84 is: 426,562.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,755.08 : 777,976.20 = 309,105.84 : x
  2. Step 2: Convert to fraction form
    563,755.08/777,976.20 = 309,105.84/x
  3. Step 3: Cross multiply
    563,755.08x = 777,976.20 × 309,105.84
  4. Step 4: Simplify right side
    563,755.08x = 240,476,986,801.01
  5. Step 5: Solve for x
    x = 240,476,986,801.01/563,755.08
  6. Step 6: Final answer
    x = 426,562.87

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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.