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Finding the Fourth Proportional to 548,716.01, 756,972.34 and 355,186.15

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Solution

The fourth proportional to 548,716.01, 756,972.34 and 355,186.15 is: 489,991.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,716.01 : 756,972.34 = 355,186.15 : x
  2. Step 2: Convert to fraction form
    548,716.01/756,972.34 = 355,186.15/x
  3. Step 3: Cross multiply
    548,716.01x = 756,972.34 × 355,186.15
  4. Step 4: Simplify right side
    548,716.01x = 268,866,088,320.70
  5. Step 5: Solve for x
    x = 268,866,088,320.70/548,716.01
  6. Step 6: Final answer
    x = 489,991.34

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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.