Home / 513,867.78-770,783.19-134,785.47

Finding the Fourth Proportional to 513,867.78, 770,783.19 and 134,785.47

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Solution

The fourth proportional to 513,867.78, 770,783.19 and 134,785.47 is: 202,173.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,867.78 : 770,783.19 = 134,785.47 : x
  2. Step 2: Convert to fraction form
    513,867.78/770,783.19 = 134,785.47/x
  3. Step 3: Cross multiply
    513,867.78x = 770,783.19 × 134,785.47
  4. Step 4: Simplify right side
    513,867.78x = 103,890,374,532.25
  5. Step 5: Solve for x
    x = 103,890,374,532.25/513,867.78
  6. Step 6: Final answer
    x = 202,173.36

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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.