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Finding the Fourth Proportional to 436,247.80, 611,369 and 436,247.80

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Solution

The fourth proportional to 436,247.80, 611,369 and 436,247.80 is: 611,369

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,247.80 : 611,369 = 436,247.80 : x
  2. Step 2: Convert to fraction form
    436,247.80/611,369 = 436,247.80/x
  3. Step 3: Cross multiply
    436,247.80x = 611,369 × 436,247.80
  4. Step 4: Simplify right side
    436,247.80x = 266,708,381,238.20
  5. Step 5: Solve for x
    x = 266,708,381,238.20/436,247.80
  6. Step 6: Final answer
    x = 611,369

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.