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Finding the Fourth Proportional to 550,378.20, 758,818.80 and 356,443.22

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Solution

The fourth proportional to 550,378.20, 758,818.80 and 356,443.22 is: 491,436.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,378.20 : 758,818.80 = 356,443.22 : x
  2. Step 2: Convert to fraction form
    550,378.20/758,818.80 = 356,443.22/x
  3. Step 3: Cross multiply
    550,378.20x = 758,818.80 × 356,443.22
  4. Step 4: Simplify right side
    550,378.20x = 270,475,816,468.54
  5. Step 5: Solve for x
    x = 270,475,816,468.54/550,378.20
  6. Step 6: Final answer
    x = 491,436.28

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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.