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Finding the Fourth Proportional to 509,196.07, 762,672.42 and 339,923.47

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Solution

The fourth proportional to 509,196.07, 762,672.42 and 339,923.47 is: 509,136.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,196.07 : 762,672.42 = 339,923.47 : x
  2. Step 2: Convert to fraction form
    509,196.07/762,672.42 = 339,923.47/x
  3. Step 3: Cross multiply
    509,196.07x = 762,672.42 × 339,923.47
  4. Step 4: Simplify right side
    509,196.07x = 259,250,255,479.70
  5. Step 5: Solve for x
    x = 259,250,255,479.70/509,196.07
  6. Step 6: Final answer
    x = 509,136.40

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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.