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Finding the Fourth Proportional to 564,604.61, 779,053.82 and 319,588.20

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Solution

The fourth proportional to 564,604.61, 779,053.82 and 319,588.20 is: 440,974.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,604.61 : 779,053.82 = 319,588.20 : x
  2. Step 2: Convert to fraction form
    564,604.61/779,053.82 = 319,588.20/x
  3. Step 3: Cross multiply
    564,604.61x = 779,053.82 × 319,588.20
  4. Step 4: Simplify right side
    564,604.61x = 248,976,406,438.98
  5. Step 5: Solve for x
    x = 248,976,406,438.98/564,604.61
  6. Step 6: Final answer
    x = 440,974.81

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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.