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Finding the Fourth Proportional to 592,322.70, 817,405.41 and 320,390.47

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Solution

The fourth proportional to 592,322.70, 817,405.41 and 320,390.47 is: 442,138.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    592,322.70 : 817,405.41 = 320,390.47 : x
  2. Step 2: Convert to fraction form
    592,322.70/817,405.41 = 320,390.47/x
  3. Step 3: Cross multiply
    592,322.70x = 817,405.41 × 320,390.47
  4. Step 4: Simplify right side
    592,322.70x = 261,888,903,490.44
  5. Step 5: Solve for x
    x = 261,888,903,490.44/592,322.70
  6. Step 6: Final answer
    x = 442,138.89

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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.