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Finding the Fourth Proportional to 592,661.50, 817,872.81 and 320,729.38

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Solution

The fourth proportional to 592,661.50, 817,872.81 and 320,729.38 is: 442,606.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    592,661.50 : 817,872.81 = 320,729.38 : x
  2. Step 2: Convert to fraction form
    592,661.50/817,872.81 = 320,729.38/x
  3. Step 3: Cross multiply
    592,661.50x = 817,872.81 × 320,729.38
  4. Step 4: Simplify right side
    592,661.50x = 262,315,839,270.16
  5. Step 5: Solve for x
    x = 262,315,839,270.16/592,661.50
  6. Step 6: Final answer
    x = 442,606.51

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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.