Home / 687,856.22-949,243.56-381,933.26

Finding the Fourth Proportional to 687,856.22, 949,243.56 and 381,933.26

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Solution

The fourth proportional to 687,856.22, 949,243.56 and 381,933.26 is: 527,069.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,856.22 : 949,243.56 = 381,933.26 : x
  2. Step 2: Convert to fraction form
    687,856.22/949,243.56 = 381,933.26/x
  3. Step 3: Cross multiply
    687,856.22x = 949,243.56 × 381,933.26
  4. Step 4: Simplify right side
    687,856.22x = 362,547,687,404.81
  5. Step 5: Solve for x
    x = 362,547,687,404.81/687,856.22
  6. Step 6: Final answer
    x = 527,069.00

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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.