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Finding the Fourth Proportional to 520,735.70, 781,103.55 and 165,785.60

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Solution

The fourth proportional to 520,735.70, 781,103.55 and 165,785.60 is: 248,678.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,735.70 : 781,103.55 = 165,785.60 : x
  2. Step 2: Convert to fraction form
    520,735.70/781,103.55 = 165,785.60/x
  3. Step 3: Cross multiply
    520,735.70x = 781,103.55 × 165,785.60
  4. Step 4: Simplify right side
    520,735.70x = 129,495,720,698.88
  5. Step 5: Solve for x
    x = 129,495,720,698.88/520,735.70
  6. Step 6: Final answer
    x = 248,678.40

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Similar ratio
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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.