Home / 715,664.31-987,220.38-453,539.61

Finding the Fourth Proportional to 715,664.31, 987,220.38 and 453,539.61

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Solution

The fourth proportional to 715,664.31, 987,220.38 and 453,539.61 is: 625,633.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,664.31 : 987,220.38 = 453,539.61 : x
  2. Step 2: Convert to fraction form
    715,664.31/987,220.38 = 453,539.61/x
  3. Step 3: Cross multiply
    715,664.31x = 987,220.38 × 453,539.61
  4. Step 4: Simplify right side
    715,664.31x = 447,743,546,129.25
  5. Step 5: Solve for x
    x = 447,743,546,129.25/715,664.31
  6. Step 6: Final answer
    x = 625,633.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.