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Finding the Fourth Proportional to 809,397.84, 1,116,978.07 and 446,821.89

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Solution

The fourth proportional to 809,397.84, 1,116,978.07 and 446,821.89 is: 616,619.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,397.84 : 1,116,978.07 = 446,821.89 : x
  2. Step 2: Convert to fraction form
    809,397.84/1,116,978.07 = 446,821.89/x
  3. Step 3: Cross multiply
    809,397.84x = 1,116,978.07 × 446,821.89
  4. Step 4: Simplify right side
    809,397.84x = 499,090,256,235.45
  5. Step 5: Solve for x
    x = 499,090,256,235.45/809,397.84
  6. Step 6: Final answer
    x = 616,619.21

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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.