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Finding the Fourth Proportional to 564,676.20, 779,254.48 and 310,043.80

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Solution

The fourth proportional to 564,676.20, 779,254.48 and 310,043.80 is: 427,861.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,676.20 : 779,254.48 = 310,043.80 : x
  2. Step 2: Convert to fraction form
    564,676.20/779,254.48 = 310,043.80/x
  3. Step 3: Cross multiply
    564,676.20x = 779,254.48 × 310,043.80
  4. Step 4: Simplify right side
    564,676.20x = 241,603,020,146.22
  5. Step 5: Solve for x
    x = 241,603,020,146.22/564,676.20
  6. Step 6: Final answer
    x = 427,861.17

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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.