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Finding the Fourth Proportional to 647,776.38, 893,932.65 and 361,315.02

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Solution

The fourth proportional to 647,776.38, 893,932.65 and 361,315.02 is: 498,615.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,776.38 : 893,932.65 = 361,315.02 : x
  2. Step 2: Convert to fraction form
    647,776.38/893,932.65 = 361,315.02/x
  3. Step 3: Cross multiply
    647,776.38x = 893,932.65 × 361,315.02
  4. Step 4: Simplify right side
    647,776.38x = 322,991,293,313.40
  5. Step 5: Solve for x
    x = 322,991,293,313.40/647,776.38
  6. Step 6: Final answer
    x = 498,615.42

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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.