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Finding the Fourth Proportional to 564,776.12, 779,395.30 and 323,043.78

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Solution

The fourth proportional to 564,776.12, 779,395.30 and 323,043.78 is: 445,802.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,776.12 : 779,395.30 = 323,043.78 : x
  2. Step 2: Convert to fraction form
    564,776.12/779,395.30 = 323,043.78/x
  3. Step 3: Cross multiply
    564,776.12x = 779,395.30 × 323,043.78
  4. Step 4: Simplify right side
    564,776.12x = 251,778,803,826.23
  5. Step 5: Solve for x
    x = 251,778,803,826.23/564,776.12
  6. Step 6: Final answer
    x = 445,802.85

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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.