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Finding the Fourth Proportional to 564,480.28, 778,982.48 and 319,460.59

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Solution

The fourth proportional to 564,480.28, 778,982.48 and 319,460.59 is: 440,855.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,480.28 : 778,982.48 = 319,460.59 : x
  2. Step 2: Convert to fraction form
    564,480.28/778,982.48 = 319,460.59/x
  3. Step 3: Cross multiply
    564,480.28x = 778,982.48 × 319,460.59
  4. Step 4: Simplify right side
    564,480.28x = 248,854,203,234.87
  5. Step 5: Solve for x
    x = 248,854,203,234.87/564,480.28
  6. Step 6: Final answer
    x = 440,855.44

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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.