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Finding the Fourth Proportional to 664,787.80, 996,501.30 and 327,309.40

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Solution

The fourth proportional to 664,787.80, 996,501.30 and 327,309.40 is: 490,629.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,787.80 : 996,501.30 = 327,309.40 : x
  2. Step 2: Convert to fraction form
    664,787.80/996,501.30 = 327,309.40/x
  3. Step 3: Cross multiply
    664,787.80x = 996,501.30 × 327,309.40
  4. Step 4: Simplify right side
    664,787.80x = 326,164,242,602.22
  5. Step 5: Solve for x
    x = 326,164,242,602.22/664,787.80
  6. Step 6: Final answer
    x = 490,629.10

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1.5x scale

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.