Home / 786,081.61-1,179,371.64-280,631.74

Finding the Fourth Proportional to 786,081.61, 1,179,371.64 and 280,631.74

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Solution

The fourth proportional to 786,081.61, 1,179,371.64 and 280,631.74 is: 421,036.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,081.61 : 1,179,371.64 = 280,631.74 : x
  2. Step 2: Convert to fraction form
    786,081.61/1,179,371.64 = 280,631.74/x
  3. Step 3: Cross multiply
    786,081.61x = 1,179,371.64 × 280,631.74
  4. Step 4: Simplify right side
    786,081.61x = 330,969,115,755.12
  5. Step 5: Solve for x
    x = 330,969,115,755.12/786,081.61
  6. Step 6: Final answer
    x = 421,036.58

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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.