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Finding the Fourth Proportional to 618,801.60, 927,316.80 and 351,998.40

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Solution

The fourth proportional to 618,801.60, 927,316.80 and 351,998.40 is: 527,493.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,801.60 : 927,316.80 = 351,998.40 : x
  2. Step 2: Convert to fraction form
    618,801.60/927,316.80 = 351,998.40/x
  3. Step 3: Cross multiply
    618,801.60x = 927,316.80 × 351,998.40
  4. Step 4: Simplify right side
    618,801.60x = 326,414,029,893.12
  5. Step 5: Solve for x
    x = 326,414,029,893.12/618,801.60
  6. Step 6: Final answer
    x = 527,493.84

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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.