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Finding the Fourth Proportional to 518,738.05, 715,863.96 and 292,383.55

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Solution

The fourth proportional to 518,738.05, 715,863.96 and 292,383.55 is: 403,492.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,738.05 : 715,863.96 = 292,383.55 : x
  2. Step 2: Convert to fraction form
    518,738.05/715,863.96 = 292,383.55/x
  3. Step 3: Cross multiply
    518,738.05x = 715,863.96 × 292,383.55
  4. Step 4: Simplify right side
    518,738.05x = 209,306,845,941.86
  5. Step 5: Solve for x
    x = 209,306,845,941.86/518,738.05
  6. Step 6: Final answer
    x = 403,492.37

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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.