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Finding the Fourth Proportional to 807,705.36, 1,114,641 and 445,142.28

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Solution

The fourth proportional to 807,705.36, 1,114,641 and 445,142.28 is: 614,300.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,705.36 : 1,114,641 = 445,142.28 : x
  2. Step 2: Convert to fraction form
    807,705.36/1,114,641 = 445,142.28/x
  3. Step 3: Cross multiply
    807,705.36x = 1,114,641 × 445,142.28
  4. Step 4: Simplify right side
    807,705.36x = 496,173,836,121.48
  5. Step 5: Solve for x
    x = 496,173,836,121.48/807,705.36
  6. Step 6: Final answer
    x = 614,300.54

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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.