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Finding the Fourth Proportional to 521,945.10, 729,148.50 and 521,945.10

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Solution

The fourth proportional to 521,945.10, 729,148.50 and 521,945.10 is: 729,148.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,945.10 : 729,148.50 = 521,945.10 : x
  2. Step 2: Convert to fraction form
    521,945.10/729,148.50 = 521,945.10/x
  3. Step 3: Cross multiply
    521,945.10x = 729,148.50 × 521,945.10
  4. Step 4: Simplify right side
    521,945.10x = 380,575,486,747.35
  5. Step 5: Solve for x
    x = 380,575,486,747.35/521,945.10
  6. Step 6: Final answer
    x = 729,148.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.