Home / 1,098,459-1,515,896.46-621,531

Finding the Fourth Proportional to 1,098,459, 1,515,896.46 and 621,531

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Solution

The fourth proportional to 1,098,459, 1,515,896.46 and 621,531 is: 857,725.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,459 : 1,515,896.46 = 621,531 : x
  2. Step 2: Convert to fraction form
    1,098,459/1,515,896.46 = 621,531/x
  3. Step 3: Cross multiply
    1,098,459x = 1,515,896.46 × 621,531
  4. Step 4: Simplify right side
    1,098,459x = 942,176,642,680.26
  5. Step 5: Solve for x
    x = 942,176,642,680.26/1,098,459
  6. Step 6: Final answer
    x = 857,725.82

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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.