Home / 781,452.72-1,078,096.40-490,893.52

Finding the Fourth Proportional to 781,452.72, 1,078,096.40 and 490,893.52

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Solution

The fourth proportional to 781,452.72, 1,078,096.40 and 490,893.52 is: 677,239.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,452.72 : 1,078,096.40 = 490,893.52 : x
  2. Step 2: Convert to fraction form
    781,452.72/1,078,096.40 = 490,893.52/x
  3. Step 3: Cross multiply
    781,452.72x = 1,078,096.40 × 490,893.52
  4. Step 4: Simplify right side
    781,452.72x = 529,230,536,695.33
  5. Step 5: Solve for x
    x = 529,230,536,695.33/781,452.72
  6. Step 6: Final answer
    x = 677,239.36

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.