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Finding the Fourth Proportional to 627,483.84, 865,960.92 and 355,604.64

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Solution

The fourth proportional to 627,483.84, 865,960.92 and 355,604.64 is: 490,753.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,483.84 : 865,960.92 = 355,604.64 : x
  2. Step 2: Convert to fraction form
    627,483.84/865,960.92 = 355,604.64/x
  3. Step 3: Cross multiply
    627,483.84x = 865,960.92 × 355,604.64
  4. Step 4: Simplify right side
    627,483.84x = 307,939,721,210.67
  5. Step 5: Solve for x
    x = 307,939,721,210.67/627,483.84
  6. Step 6: Final answer
    x = 490,753.23

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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.