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Finding the Fourth Proportional to 521,741.82, 720,021.51 and 292,308.78

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Solution

The fourth proportional to 521,741.82, 720,021.51 and 292,308.78 is: 403,396.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,741.82 : 720,021.51 = 292,308.78 : x
  2. Step 2: Convert to fraction form
    521,741.82/720,021.51 = 292,308.78/x
  3. Step 3: Cross multiply
    521,741.82x = 720,021.51 × 292,308.78
  4. Step 4: Simplify right side
    521,741.82x = 210,468,609,161.86
  5. Step 5: Solve for x
    x = 210,468,609,161.86/521,741.82
  6. Step 6: Final answer
    x = 403,396.09

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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.