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Finding the Fourth Proportional to 767,696.80, 1,059,078.96 and 445,220

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Solution

The fourth proportional to 767,696.80, 1,059,078.96 and 445,220 is: 614,204.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,696.80 : 1,059,078.96 = 445,220 : x
  2. Step 2: Convert to fraction form
    767,696.80/1,059,078.96 = 445,220/x
  3. Step 3: Cross multiply
    767,696.80x = 1,059,078.96 × 445,220
  4. Step 4: Simplify right side
    767,696.80x = 471,523,134,571.20
  5. Step 5: Solve for x
    x = 471,523,134,571.20/767,696.80
  6. Step 6: Final answer
    x = 614,204.90

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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.