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Finding the Fourth Proportional to 774,640.80, 1,161,730.80 and 301,053.60

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Solution

The fourth proportional to 774,640.80, 1,161,730.80 and 301,053.60 is: 451,490.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,640.80 : 1,161,730.80 = 301,053.60 : x
  2. Step 2: Convert to fraction form
    774,640.80/1,161,730.80 = 301,053.60/x
  3. Step 3: Cross multiply
    774,640.80x = 1,161,730.80 × 301,053.60
  4. Step 4: Simplify right side
    774,640.80x = 349,743,239,570.88
  5. Step 5: Solve for x
    x = 349,743,239,570.88/774,640.80
  6. Step 6: Final answer
    x = 451,490.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.