Home / 711,687.16-1,067,892.78-312,224.32

Finding the Fourth Proportional to 711,687.16, 1,067,892.78 and 312,224.32

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Solution

The fourth proportional to 711,687.16, 1,067,892.78 and 312,224.32 is: 468,495.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,687.16 : 1,067,892.78 = 312,224.32 : x
  2. Step 2: Convert to fraction form
    711,687.16/1,067,892.78 = 312,224.32/x
  3. Step 3: Cross multiply
    711,687.16x = 1,067,892.78 × 312,224.32
  4. Step 4: Simplify right side
    711,687.16x = 333,422,097,068.41
  5. Step 5: Solve for x
    x = 333,422,097,068.41/711,687.16
  6. Step 6: Final answer
    x = 468,495.31

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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.