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Finding the Fourth Proportional to 564,664.20, 779,237.92 and 310,031.80

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Solution

The fourth proportional to 564,664.20, 779,237.92 and 310,031.80 is: 427,844.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,664.20 : 779,237.92 = 310,031.80 : x
  2. Step 2: Convert to fraction form
    564,664.20/779,237.92 = 310,031.80/x
  3. Step 3: Cross multiply
    564,664.20x = 779,237.92 × 310,031.80
  4. Step 4: Simplify right side
    564,664.20x = 241,588,534,965.86
  5. Step 5: Solve for x
    x = 241,588,534,965.86/564,664.20
  6. Step 6: Final answer
    x = 427,844.61

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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.