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Finding the Fourth Proportional to 647,807.01, 893,971.35 and 361,326.87

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Solution

The fourth proportional to 647,807.01, 893,971.35 and 361,326.87 is: 498,629.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,807.01 : 893,971.35 = 361,326.87 : x
  2. Step 2: Convert to fraction form
    647,807.01/893,971.35 = 361,326.87/x
  3. Step 3: Cross multiply
    647,807.01x = 893,971.35 × 361,326.87
  4. Step 4: Simplify right side
    647,807.01x = 323,015,869,765.18
  5. Step 5: Solve for x
    x = 323,015,869,765.18/647,807.01
  6. Step 6: Final answer
    x = 498,629.78

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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.