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Finding the Fourth Proportional to 564,645.18, 779,211.68 and 310,012.78

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Solution

The fourth proportional to 564,645.18, 779,211.68 and 310,012.78 is: 427,818.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,645.18 : 779,211.68 = 310,012.78 : x
  2. Step 2: Convert to fraction form
    564,645.18/779,211.68 = 310,012.78/x
  3. Step 3: Cross multiply
    564,645.18x = 779,211.68 × 310,012.78
  4. Step 4: Simplify right side
    564,645.18x = 241,565,579,125.27
  5. Step 5: Solve for x
    x = 241,565,579,125.27/564,645.18
  6. Step 6: Final answer
    x = 427,818.37

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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.