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Finding the Fourth Proportional to 436,853.40, 655,280.10 and 347,623.80

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Solution

The fourth proportional to 436,853.40, 655,280.10 and 347,623.80 is: 521,435.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,853.40 : 655,280.10 = 347,623.80 : x
  2. Step 2: Convert to fraction form
    436,853.40/655,280.10 = 347,623.80/x
  3. Step 3: Cross multiply
    436,853.40x = 655,280.10 × 347,623.80
  4. Step 4: Simplify right side
    436,853.40x = 227,790,958,426.38
  5. Step 5: Solve for x
    x = 227,790,958,426.38/436,853.40
  6. Step 6: Final answer
    x = 521,435.70

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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.