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Finding the Fourth Proportional to 536,383.92, 739,881.48 and 318,444.66

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Solution

The fourth proportional to 536,383.92, 739,881.48 and 318,444.66 is: 439,258.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,383.92 : 739,881.48 = 318,444.66 : x
  2. Step 2: Convert to fraction form
    536,383.92/739,881.48 = 318,444.66/x
  3. Step 3: Cross multiply
    536,383.92x = 739,881.48 × 318,444.66
  4. Step 4: Simplify right side
    536,383.92x = 235,611,306,338.90
  5. Step 5: Solve for x
    x = 235,611,306,338.90/536,383.92
  6. Step 6: Final answer
    x = 439,258.71

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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.