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Finding the Fourth Proportional to 501,452.78, 692,000.77 and 272,009.49

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Solution

The fourth proportional to 501,452.78, 692,000.77 and 272,009.49 is: 375,370.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,452.78 : 692,000.77 = 272,009.49 : x
  2. Step 2: Convert to fraction form
    501,452.78/692,000.77 = 272,009.49/x
  3. Step 3: Cross multiply
    501,452.78x = 692,000.77 × 272,009.49
  4. Step 4: Simplify right side
    501,452.78x = 188,230,777,654.80
  5. Step 5: Solve for x
    x = 188,230,777,654.80/501,452.78
  6. Step 6: Final answer
    x = 375,370.90

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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.