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Finding the Fourth Proportional to 521,570.40, 782,355.60 and 268,850.40

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Solution

The fourth proportional to 521,570.40, 782,355.60 and 268,850.40 is: 403,275.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,570.40 : 782,355.60 = 268,850.40 : x
  2. Step 2: Convert to fraction form
    521,570.40/782,355.60 = 268,850.40/x
  3. Step 3: Cross multiply
    521,570.40x = 782,355.60 × 268,850.40
  4. Step 4: Simplify right side
    521,570.40x = 210,336,616,002.24
  5. Step 5: Solve for x
    x = 210,336,616,002.24/521,570.40
  6. Step 6: Final answer
    x = 403,275.60

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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.