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Finding the Fourth Proportional to 518,728.16, 715,850.33 and 292,373.66

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Solution

The fourth proportional to 518,728.16, 715,850.33 and 292,373.66 is: 403,478.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,728.16 : 715,850.33 = 292,373.66 : x
  2. Step 2: Convert to fraction form
    518,728.16/715,850.33 = 292,373.66/x
  3. Step 3: Cross multiply
    518,728.16x = 715,850.33 × 292,373.66
  4. Step 4: Simplify right side
    518,728.16x = 209,295,780,994.31
  5. Step 5: Solve for x
    x = 209,295,780,994.31/518,728.16
  6. Step 6: Final answer
    x = 403,478.73

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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.