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Finding the Fourth Proportional to 518,608.72, 715,722.12 and 292,269.52

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Solution

The fourth proportional to 518,608.72, 715,722.12 and 292,269.52 is: 403,355.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,608.72 : 715,722.12 = 292,269.52 : x
  2. Step 2: Convert to fraction form
    518,608.72/715,722.12 = 292,269.52/x
  3. Step 3: Cross multiply
    518,608.72x = 715,722.12 × 292,269.52
  4. Step 4: Simplify right side
    518,608.72x = 209,183,760,465.78
  5. Step 5: Solve for x
    x = 209,183,760,465.78/518,608.72
  6. Step 6: Final answer
    x = 403,355.66

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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.