Home / 782,519.32-1,173,778.98-427,339.59

Finding the Fourth Proportional to 782,519.32, 1,173,778.98 and 427,339.59

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Solution

The fourth proportional to 782,519.32, 1,173,778.98 and 427,339.59 is: 641,009.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,519.32 : 1,173,778.98 = 427,339.59 : x
  2. Step 2: Convert to fraction form
    782,519.32/1,173,778.98 = 427,339.59/x
  3. Step 3: Cross multiply
    782,519.32x = 1,173,778.98 × 427,339.59
  4. Step 4: Simplify right side
    782,519.32x = 501,602,228,063.82
  5. Step 5: Solve for x
    x = 501,602,228,063.82/782,519.32
  6. Step 6: Final answer
    x = 641,009.39

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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.