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Finding the Fourth Proportional to 1,196,980, 1,651,866.96 and 660,470.56

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Solution

The fourth proportional to 1,196,980, 1,651,866.96 and 660,470.56 is: 911,468.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,196,980 : 1,651,866.96 = 660,470.56 : x
  2. Step 2: Convert to fraction form
    1,196,980/1,651,866.96 = 660,470.56/x
  3. Step 3: Cross multiply
    1,196,980x = 1,651,866.96 × 660,470.56
  4. Step 4: Simplify right side
    1,196,980x = 1,091,009,496,116.70
  5. Step 5: Solve for x
    x = 1,091,009,496,116.70/1,196,980
  6. Step 6: Final answer
    x = 911,468.44

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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.