Home / 859,855.59-1,289,966.76-291,216.80

Finding the Fourth Proportional to 859,855.59, 1,289,966.76 and 291,216.80

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Solution

The fourth proportional to 859,855.59, 1,289,966.76 and 291,216.80 is: 436,887.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,855.59 : 1,289,966.76 = 291,216.80 : x
  2. Step 2: Convert to fraction form
    859,855.59/1,289,966.76 = 291,216.80/x
  3. Step 3: Cross multiply
    859,855.59x = 1,289,966.76 × 291,216.80
  4. Step 4: Simplify right side
    859,855.59x = 375,659,985,503.73
  5. Step 5: Solve for x
    x = 375,659,985,503.73/859,855.59
  6. Step 6: Final answer
    x = 436,887.30

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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.