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Finding the Fourth Proportional to 567,257.58, 782,815.60 and 309,134.60

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Solution

The fourth proportional to 567,257.58, 782,815.60 and 309,134.60 is: 426,605.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,257.58 : 782,815.60 = 309,134.60 : x
  2. Step 2: Convert to fraction form
    567,257.58/782,815.60 = 309,134.60/x
  3. Step 3: Cross multiply
    567,257.58x = 782,815.60 × 309,134.60
  4. Step 4: Simplify right side
    567,257.58x = 241,995,385,048.78
  5. Step 5: Solve for x
    x = 241,995,385,048.78/567,257.58
  6. Step 6: Final answer
    x = 426,605.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.