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Finding the Fourth Proportional to 592,321.70, 817,404.03 and 320,389.47

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Solution

The fourth proportional to 592,321.70, 817,404.03 and 320,389.47 is: 442,137.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    592,321.70 : 817,404.03 = 320,389.47 : x
  2. Step 2: Convert to fraction form
    592,321.70/817,404.03 = 320,389.47/x
  3. Step 3: Cross multiply
    592,321.70x = 817,404.03 × 320,389.47
  4. Step 4: Simplify right side
    592,321.70x = 261,887,643,947.56
  5. Step 5: Solve for x
    x = 261,887,643,947.56/592,321.70
  6. Step 6: Final answer
    x = 442,137.51

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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.