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Finding the Fourth Proportional to 436,279.80, 654,419.70 and 433,169.40

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Solution

The fourth proportional to 436,279.80, 654,419.70 and 433,169.40 is: 649,754.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,279.80 : 654,419.70 = 433,169.40 : x
  2. Step 2: Convert to fraction form
    436,279.80/654,419.70 = 433,169.40/x
  3. Step 3: Cross multiply
    436,279.80x = 654,419.70 × 433,169.40
  4. Step 4: Simplify right side
    436,279.80x = 283,474,588,797.18
  5. Step 5: Solve for x
    x = 283,474,588,797.18/436,279.80
  6. Step 6: Final answer
    x = 649,754.10

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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.