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Finding the Fourth Proportional to 611,286.40, 917,620.80 and 362,108.80

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Solution

The fourth proportional to 611,286.40, 917,620.80 and 362,108.80 is: 543,572.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,286.40 : 917,620.80 = 362,108.80 : x
  2. Step 2: Convert to fraction form
    611,286.40/917,620.80 = 362,108.80/x
  3. Step 3: Cross multiply
    611,286.40x = 917,620.80 × 362,108.80
  4. Step 4: Simplify right side
    611,286.40x = 332,278,566,743.04
  5. Step 5: Solve for x
    x = 332,278,566,743.04/611,286.40
  6. Step 6: Final answer
    x = 543,572.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.