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Finding the Fourth Proportional to 436,882.80, 656,015.40 and 319,378.80

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Solution

The fourth proportional to 436,882.80, 656,015.40 and 319,378.80 is: 479,573.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,882.80 : 656,015.40 = 319,378.80 : x
  2. Step 2: Convert to fraction form
    436,882.80/656,015.40 = 319,378.80/x
  3. Step 3: Cross multiply
    436,882.80x = 656,015.40 × 319,378.80
  4. Step 4: Simplify right side
    436,882.80x = 209,517,411,233.52
  5. Step 5: Solve for x
    x = 209,517,411,233.52/436,882.80
  6. Step 6: Final answer
    x = 479,573.49

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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.