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Finding the Fourth Proportional to 522,673.72, 721,202.30 and 307,856.56

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Solution

The fourth proportional to 522,673.72, 721,202.30 and 307,856.56 is: 424,790.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,673.72 : 721,202.30 = 307,856.56 : x
  2. Step 2: Convert to fraction form
    522,673.72/721,202.30 = 307,856.56/x
  3. Step 3: Cross multiply
    522,673.72x = 721,202.30 × 307,856.56
  4. Step 4: Simplify right side
    522,673.72x = 222,026,855,799.80
  5. Step 5: Solve for x
    x = 222,026,855,799.80/522,673.72
  6. Step 6: Final answer
    x = 424,790.55

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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.