Home / 782,340.87-1,173,511.30-427,161.13

Finding the Fourth Proportional to 782,340.87, 1,173,511.30 and 427,161.13

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Solution

The fourth proportional to 782,340.87, 1,173,511.30 and 427,161.13 is: 640,741.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,340.87 : 1,173,511.30 = 427,161.13 : x
  2. Step 2: Convert to fraction form
    782,340.87/1,173,511.30 = 427,161.13/x
  3. Step 3: Cross multiply
    782,340.87x = 1,173,511.30 × 427,161.13
  4. Step 4: Simplify right side
    782,340.87x = 501,278,412,975.77
  5. Step 5: Solve for x
    x = 501,278,412,975.77/782,340.87
  6. Step 6: Final answer
    x = 640,741.69

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Double scale
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Similar ratio
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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.