Home / 859,788.81-1,289,876.40-291,137.22

Finding the Fourth Proportional to 859,788.81, 1,289,876.40 and 291,137.22

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Solution

The fourth proportional to 859,788.81, 1,289,876.40 and 291,137.22 is: 436,771.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,788.81 : 1,289,876.40 = 291,137.22 : x
  2. Step 2: Convert to fraction form
    859,788.81/1,289,876.40 = 291,137.22/x
  3. Step 3: Cross multiply
    859,788.81x = 1,289,876.40 × 291,137.22
  4. Step 4: Simplify right side
    859,788.81x = 375,531,029,239.61
  5. Step 5: Solve for x
    x = 375,531,029,239.61/859,788.81
  6. Step 6: Final answer
    x = 436,771.25

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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.