Home / 672,938.44-928,420.56-431,354.23

Finding the Fourth Proportional to 672,938.44, 928,420.56 and 431,354.23

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Solution

The fourth proportional to 672,938.44, 928,420.56 and 431,354.23 is: 595,118.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,938.44 : 928,420.56 = 431,354.23 : x
  2. Step 2: Convert to fraction form
    672,938.44/928,420.56 = 431,354.23/x
  3. Step 3: Cross multiply
    672,938.44x = 928,420.56 × 431,354.23
  4. Step 4: Simplify right side
    672,938.44x = 400,478,135,774.97
  5. Step 5: Solve for x
    x = 400,478,135,774.97/672,938.44
  6. Step 6: Final answer
    x = 595,118.53

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Half scale
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Double scale
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Similar ratio
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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.