Home / 859,856.59-1,289,968.26-291,217.80

Finding the Fourth Proportional to 859,856.59, 1,289,968.26 and 291,217.80

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Solution

The fourth proportional to 859,856.59, 1,289,968.26 and 291,217.80 is: 436,888.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,856.59 : 1,289,968.26 = 291,217.80 : x
  2. Step 2: Convert to fraction form
    859,856.59/1,289,968.26 = 291,217.80/x
  3. Step 3: Cross multiply
    859,856.59x = 1,289,968.26 × 291,217.80
  4. Step 4: Simplify right side
    859,856.59x = 375,661,718,747.03
  5. Step 5: Solve for x
    x = 375,661,718,747.03/859,856.59
  6. Step 6: Final answer
    x = 436,888.81

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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.