Home / 919,429.80-1,378,488.60-413,576.70

Finding the Fourth Proportional to 919,429.80, 1,378,488.60 and 413,576.70

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Solution

The fourth proportional to 919,429.80, 1,378,488.60 and 413,576.70 is: 620,069.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,429.80 : 1,378,488.60 = 413,576.70 : x
  2. Step 2: Convert to fraction form
    919,429.80/1,378,488.60 = 413,576.70/x
  3. Step 3: Cross multiply
    919,429.80x = 1,378,488.60 × 413,576.70
  4. Step 4: Simplify right side
    919,429.80x = 570,110,766,175.62
  5. Step 5: Solve for x
    x = 570,110,766,175.62/919,429.80
  6. Step 6: Final answer
    x = 620,069.92

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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.