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Finding the Fourth Proportional to 707,833.12, 1,062,186 and 287,112.64

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Solution

The fourth proportional to 707,833.12, 1,062,186 and 287,112.64 is: 430,845.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,833.12 : 1,062,186 = 287,112.64 : x
  2. Step 2: Convert to fraction form
    707,833.12/1,062,186 = 287,112.64/x
  3. Step 3: Cross multiply
    707,833.12x = 1,062,186 × 287,112.64
  4. Step 4: Simplify right side
    707,833.12x = 304,967,026,631.04
  5. Step 5: Solve for x
    x = 304,967,026,631.04/707,833.12
  6. Step 6: Final answer
    x = 430,845.94

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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.