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Finding the Fourth Proportional to 407,499.80, 611,249.70 and 370,758.20

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Solution

The fourth proportional to 407,499.80, 611,249.70 and 370,758.20 is: 556,137.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,499.80 : 611,249.70 = 370,758.20 : x
  2. Step 2: Convert to fraction form
    407,499.80/611,249.70 = 370,758.20/x
  3. Step 3: Cross multiply
    407,499.80x = 611,249.70 × 370,758.20
  4. Step 4: Simplify right side
    407,499.80x = 226,625,838,522.54
  5. Step 5: Solve for x
    x = 226,625,838,522.54/407,499.80
  6. Step 6: Final answer
    x = 556,137.30

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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.