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Finding the Fourth Proportional to 807,356, 1,114,151.28 and 449,660

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Solution

The fourth proportional to 807,356, 1,114,151.28 and 449,660 is: 620,530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,356 : 1,114,151.28 = 449,660 : x
  2. Step 2: Convert to fraction form
    807,356/1,114,151.28 = 449,660/x
  3. Step 3: Cross multiply
    807,356x = 1,114,151.28 × 449,660
  4. Step 4: Simplify right side
    807,356x = 500,989,264,564.80
  5. Step 5: Solve for x
    x = 500,989,264,564.80/807,356
  6. Step 6: Final answer
    x = 620,530.80

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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.