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Finding the Fourth Proportional to 518,734.26, 715,911.21 and 304,055.91

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Solution

The fourth proportional to 518,734.26, 715,911.21 and 304,055.91 is: 419,631.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,734.26 : 715,911.21 = 304,055.91 : x
  2. Step 2: Convert to fraction form
    518,734.26/715,911.21 = 304,055.91/x
  3. Step 3: Cross multiply
    518,734.26x = 715,911.21 × 304,055.91
  4. Step 4: Simplify right side
    518,734.26x = 217,677,034,435.75
  5. Step 5: Solve for x
    x = 217,677,034,435.75/518,734.26
  6. Step 6: Final answer
    x = 419,631.11

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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.