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Finding the Fourth Proportional to 592,661.09, 817,874.34 and 320,728.90

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Solution

The fourth proportional to 592,661.09, 817,874.34 and 320,728.90 is: 442,606.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    592,661.09 : 817,874.34 = 320,728.90 : x
  2. Step 2: Convert to fraction form
    592,661.09/817,874.34 = 320,728.90/x
  3. Step 3: Cross multiply
    592,661.09x = 817,874.34 × 320,728.90
  4. Step 4: Simplify right side
    592,661.09x = 262,315,937,406.43
  5. Step 5: Solve for x
    x = 262,315,937,406.43/592,661.09
  6. Step 6: Final answer
    x = 442,606.98

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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.