Home / 1,419,220.80-2,129,171.40-472,599.72

Finding the Fourth Proportional to 1,419,220.80, 2,129,171.40 and 472,599.72

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Solution

The fourth proportional to 1,419,220.80, 2,129,171.40 and 472,599.72 is: 709,012.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,220.80 : 2,129,171.40 = 472,599.72 : x
  2. Step 2: Convert to fraction form
    1,419,220.80/2,129,171.40 = 472,599.72/x
  3. Step 3: Cross multiply
    1,419,220.80x = 2,129,171.40 × 472,599.72
  4. Step 4: Simplify right side
    1,419,220.80x = 1,006,245,807,472.01
  5. Step 5: Solve for x
    x = 1,006,245,807,472.01/1,419,220.80
  6. Step 6: Final answer
    x = 709,012.87

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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.