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Finding the Fourth Proportional to 660,025.80, 989,382.60 and 304,419.60

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Solution

The fourth proportional to 660,025.80, 989,382.60 and 304,419.60 is: 456,326.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,025.80 : 989,382.60 = 304,419.60 : x
  2. Step 2: Convert to fraction form
    660,025.80/989,382.60 = 304,419.60/x
  3. Step 3: Cross multiply
    660,025.80x = 989,382.60 × 304,419.60
  4. Step 4: Simplify right side
    660,025.80x = 301,187,455,338.96
  5. Step 5: Solve for x
    x = 301,187,455,338.96/660,025.80
  6. Step 6: Final answer
    x = 456,326.79

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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.