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Finding the Fourth Proportional to 880,935.40, 1,321,403.10 and 779,458.60

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Solution

The fourth proportional to 880,935.40, 1,321,403.10 and 779,458.60 is: 1,169,187.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,935.40 : 1,321,403.10 = 779,458.60 : x
  2. Step 2: Convert to fraction form
    880,935.40/1,321,403.10 = 779,458.60/x
  3. Step 3: Cross multiply
    880,935.40x = 1,321,403.10 × 779,458.60
  4. Step 4: Simplify right side
    880,935.40x = 1,029,979,010,361.66
  5. Step 5: Solve for x
    x = 1,029,979,010,361.66/880,935.40
  6. Step 6: Final answer
    x = 1,169,187.90

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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.