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Finding the Fourth Proportional to 722,032.56, 996,666.66 and 420,226.56

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Solution

The fourth proportional to 722,032.56, 996,666.66 and 420,226.56 is: 580,064.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,032.56 : 996,666.66 = 420,226.56 : x
  2. Step 2: Convert to fraction form
    722,032.56/996,666.66 = 420,226.56/x
  3. Step 3: Cross multiply
    722,032.56x = 996,666.66 × 420,226.56
  4. Step 4: Simplify right side
    722,032.56x = 418,825,801,998.49
  5. Step 5: Solve for x
    x = 418,825,801,998.49/722,032.56
  6. Step 6: Final answer
    x = 580,064.98

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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.