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Finding the Fourth Proportional to 518,563, 715,616.94 and 292,216.60

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Solution

The fourth proportional to 518,563, 715,616.94 and 292,216.60 is: 403,258.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,563 : 715,616.94 = 292,216.60 : x
  2. Step 2: Convert to fraction form
    518,563/715,616.94 = 292,216.60/x
  3. Step 3: Cross multiply
    518,563x = 715,616.94 × 292,216.60
  4. Step 4: Simplify right side
    518,563x = 209,115,149,109.20
  5. Step 5: Solve for x
    x = 209,115,149,109.20/518,563
  6. Step 6: Final answer
    x = 403,258.91

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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.