Home / 739,255.28-1,108,715.63-339,511.77

Finding the Fourth Proportional to 739,255.28, 1,108,715.63 and 339,511.77

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Solution

The fourth proportional to 739,255.28, 1,108,715.63 and 339,511.77 is: 509,190.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,255.28 : 1,108,715.63 = 339,511.77 : x
  2. Step 2: Convert to fraction form
    739,255.28/1,108,715.63 = 339,511.77/x
  3. Step 3: Cross multiply
    739,255.28x = 1,108,715.63 × 339,511.77
  4. Step 4: Simplify right side
    739,255.28x = 376,422,004,270.41
  5. Step 5: Solve for x
    x = 376,422,004,270.41/739,255.28
  6. Step 6: Final answer
    x = 509,190.83

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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.