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Finding the Fourth Proportional to 673,288.90, 928,298.28 and 431,173.42

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Solution

The fourth proportional to 673,288.90, 928,298.28 and 431,173.42 is: 594,481.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,288.90 : 928,298.28 = 431,173.42 : x
  2. Step 2: Convert to fraction form
    673,288.90/928,298.28 = 431,173.42/x
  3. Step 3: Cross multiply
    673,288.90x = 928,298.28 × 431,173.42
  4. Step 4: Simplify right side
    673,288.90x = 400,257,544,167.72
  5. Step 5: Solve for x
    x = 400,257,544,167.72/673,288.90
  6. Step 6: Final answer
    x = 594,481.13

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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.