Home / 868,631.60-1,303,822.20-419,713.40

Finding the Fourth Proportional to 868,631.60, 1,303,822.20 and 419,713.40

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Solution

The fourth proportional to 868,631.60, 1,303,822.20 and 419,713.40 is: 629,992.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,631.60 : 1,303,822.20 = 419,713.40 : x
  2. Step 2: Convert to fraction form
    868,631.60/1,303,822.20 = 419,713.40/x
  3. Step 3: Cross multiply
    868,631.60x = 1,303,822.20 × 419,713.40
  4. Step 4: Simplify right side
    868,631.60x = 547,231,648,557.48
  5. Step 5: Solve for x
    x = 547,231,648,557.48/868,631.60
  6. Step 6: Final answer
    x = 629,992.79

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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.