Home / 1,419,260.80-2,129,231.40-472,639.72

Finding the Fourth Proportional to 1,419,260.80, 2,129,231.40 and 472,639.72

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Solution

The fourth proportional to 1,419,260.80, 2,129,231.40 and 472,639.72 is: 709,072.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,260.80 : 2,129,231.40 = 472,639.72 : x
  2. Step 2: Convert to fraction form
    1,419,260.80/2,129,231.40 = 472,639.72/x
  3. Step 3: Cross multiply
    1,419,260.80x = 2,129,231.40 × 472,639.72
  4. Step 4: Simplify right side
    1,419,260.80x = 1,006,359,332,711.21
  5. Step 5: Solve for x
    x = 1,006,359,332,711.21/1,419,260.80
  6. Step 6: Final answer
    x = 709,072.87

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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.