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Finding the Fourth Proportional to 673,203.78, 929,021.16 and 371,397.78

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Solution

The fourth proportional to 673,203.78, 929,021.16 and 371,397.78 is: 512,528.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,203.78 : 929,021.16 = 371,397.78 : x
  2. Step 2: Convert to fraction form
    673,203.78/929,021.16 = 371,397.78/x
  3. Step 3: Cross multiply
    673,203.78x = 929,021.16 × 371,397.78
  4. Step 4: Simplify right side
    673,203.78x = 345,036,396,397.03
  5. Step 5: Solve for x
    x = 345,036,396,397.03/673,203.78
  6. Step 6: Final answer
    x = 512,528.91

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Double scale
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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.