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Finding the Fourth Proportional to 587,780.80, 879,338.40 and 509,761.60

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Solution

The fourth proportional to 587,780.80, 879,338.40 and 509,761.60 is: 762,619.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,780.80 : 879,338.40 = 509,761.60 : x
  2. Step 2: Convert to fraction form
    587,780.80/879,338.40 = 509,761.60/x
  3. Step 3: Cross multiply
    587,780.80x = 879,338.40 × 509,761.60
  4. Step 4: Simplify right side
    587,780.80x = 448,252,949,725.44
  5. Step 5: Solve for x
    x = 448,252,949,725.44/587,780.80
  6. Step 6: Final answer
    x = 762,619.24

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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.