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Finding the Fourth Proportional to 522,520.57, 721,069.05 and 293,078.35

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Solution

The fourth proportional to 522,520.57, 721,069.05 and 293,078.35 is: 404,442.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,520.57 : 721,069.05 = 293,078.35 : x
  2. Step 2: Convert to fraction form
    522,520.57/721,069.05 = 293,078.35/x
  3. Step 3: Cross multiply
    522,520.57x = 721,069.05 × 293,078.35
  4. Step 4: Simplify right side
    522,520.57x = 211,329,727,410.07
  5. Step 5: Solve for x
    x = 211,329,727,410.07/522,520.57
  6. Step 6: Final answer
    x = 404,442.89

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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.