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Finding the Fourth Proportional to 554,462.56, 765,167.14 and 312,749.94

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Solution

The fourth proportional to 554,462.56, 765,167.14 and 312,749.94 is: 431,599.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,462.56 : 765,167.14 = 312,749.94 : x
  2. Step 2: Convert to fraction form
    554,462.56/765,167.14 = 312,749.94/x
  3. Step 3: Cross multiply
    554,462.56x = 765,167.14 × 312,749.94
  4. Step 4: Simplify right side
    554,462.56x = 239,305,977,124.97
  5. Step 5: Solve for x
    x = 239,305,977,124.97/554,462.56
  6. Step 6: Final answer
    x = 431,599.88

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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.