Home / 713,850.31-1,071,193.47-287,319.70

Finding the Fourth Proportional to 713,850.31, 1,071,193.47 and 287,319.70

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Solution

The fourth proportional to 713,850.31, 1,071,193.47 and 287,319.70 is: 431,147.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,850.31 : 1,071,193.47 = 287,319.70 : x
  2. Step 2: Convert to fraction form
    713,850.31/1,071,193.47 = 287,319.70/x
  3. Step 3: Cross multiply
    713,850.31x = 1,071,193.47 × 287,319.70
  4. Step 4: Simplify right side
    713,850.31x = 307,774,986,442.36
  5. Step 5: Solve for x
    x = 307,774,986,442.36/713,850.31
  6. Step 6: Final answer
    x = 431,147.79

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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.