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Finding the Fourth Proportional to 647,205.54, 892,945.71 and 375,219.17

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Solution

The fourth proportional to 647,205.54, 892,945.71 and 375,219.17 is: 517,687.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,205.54 : 892,945.71 = 375,219.17 : x
  2. Step 2: Convert to fraction form
    647,205.54/892,945.71 = 375,219.17/x
  3. Step 3: Cross multiply
    647,205.54x = 892,945.71 × 375,219.17
  4. Step 4: Simplify right side
    647,205.54x = 335,050,343,696.53
  5. Step 5: Solve for x
    x = 335,050,343,696.53/647,205.54
  6. Step 6: Final answer
    x = 517,687.69

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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.