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Finding the Fourth Proportional to 564,329.36, 778,796.97 and 309,689.66

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Solution

The fourth proportional to 564,329.36, 778,796.97 and 309,689.66 is: 427,384.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,329.36 : 778,796.97 = 309,689.66 : x
  2. Step 2: Convert to fraction form
    564,329.36/778,796.97 = 309,689.66/x
  3. Step 3: Cross multiply
    564,329.36x = 778,796.97 × 309,689.66
  4. Step 4: Simplify right side
    564,329.36x = 241,185,368,848.33
  5. Step 5: Solve for x
    x = 241,185,368,848.33/564,329.36
  6. Step 6: Final answer
    x = 427,384.05

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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.