Home / 642,923.68-963,452.40-361,840.72

Finding the Fourth Proportional to 642,923.68, 963,452.40 and 361,840.72

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Solution

The fourth proportional to 642,923.68, 963,452.40 and 361,840.72 is: 542,235.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,923.68 : 963,452.40 = 361,840.72 : x
  2. Step 2: Convert to fraction form
    642,923.68/963,452.40 = 361,840.72/x
  3. Step 3: Cross multiply
    642,923.68x = 963,452.40 × 361,840.72
  4. Step 4: Simplify right side
    642,923.68x = 348,616,310,101.73
  5. Step 5: Solve for x
    x = 348,616,310,101.73/642,923.68
  6. Step 6: Final answer
    x = 542,235.92

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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.