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Finding the Fourth Proportional to 518,305.61, 715,626.45 and 363,585.85

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Solution

The fourth proportional to 518,305.61, 715,626.45 and 363,585.85 is: 502,004.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,305.61 : 715,626.45 = 363,585.85 : x
  2. Step 2: Convert to fraction form
    518,305.61/715,626.45 = 363,585.85/x
  3. Step 3: Cross multiply
    518,305.61x = 715,626.45 × 363,585.85
  4. Step 4: Simplify right side
    518,305.61x = 260,191,649,316.67
  5. Step 5: Solve for x
    x = 260,191,649,316.67/518,305.61
  6. Step 6: Final answer
    x = 502,004.31

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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.