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Finding the Fourth Proportional to 489,476.05, 676,165.13 and 377,734.93

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Solution

The fourth proportional to 489,476.05, 676,165.13 and 377,734.93 is: 521,805.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,476.05 : 676,165.13 = 377,734.93 : x
  2. Step 2: Convert to fraction form
    489,476.05/676,165.13 = 377,734.93/x
  3. Step 3: Cross multiply
    489,476.05x = 676,165.13 × 377,734.93
  4. Step 4: Simplify right side
    489,476.05x = 255,411,188,048.99
  5. Step 5: Solve for x
    x = 255,411,188,048.99/489,476.05
  6. Step 6: Final answer
    x = 521,805.28

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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.