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Finding the Fourth Proportional to 561,749.62, 775,158.77 and 320,017.79

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Solution

The fourth proportional to 561,749.62, 775,158.77 and 320,017.79 is: 441,592.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,749.62 : 775,158.77 = 320,017.79 : x
  2. Step 2: Convert to fraction form
    561,749.62/775,158.77 = 320,017.79/x
  3. Step 3: Cross multiply
    561,749.62x = 775,158.77 × 320,017.79
  4. Step 4: Simplify right side
    561,749.62x = 248,064,596,474.52
  5. Step 5: Solve for x
    x = 248,064,596,474.52/561,749.62
  6. Step 6: Final answer
    x = 441,592.82

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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.