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Finding the Fourth Proportional to 563,554, 777,704.70 and 308,906.92

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Solution

The fourth proportional to 563,554, 777,704.70 and 308,906.92 is: 426,291.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,554 : 777,704.70 = 308,906.92 : x
  2. Step 2: Convert to fraction form
    563,554/777,704.70 = 308,906.92/x
  3. Step 3: Cross multiply
    563,554x = 777,704.70 × 308,906.92
  4. Step 4: Simplify right side
    563,554x = 240,238,363,546.52
  5. Step 5: Solve for x
    x = 240,238,363,546.52/563,554
  6. Step 6: Final answer
    x = 426,291.65

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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.