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Finding the Fourth Proportional to 521,841.72, 720,128.64 and 292,408.44

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Solution

The fourth proportional to 521,841.72, 720,128.64 and 292,408.44 is: 403,516.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,841.72 : 720,128.64 = 292,408.44 : x
  2. Step 2: Convert to fraction form
    521,841.72/720,128.64 = 292,408.44/x
  3. Step 3: Cross multiply
    521,841.72x = 720,128.64 × 292,408.44
  4. Step 4: Simplify right side
    521,841.72x = 210,571,692,221.72
  5. Step 5: Solve for x
    x = 210,571,692,221.72/521,841.72
  6. Step 6: Final answer
    x = 403,516.40

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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.