Home / 638,709.28-881,401.44-352,224.16

Finding the Fourth Proportional to 638,709.28, 881,401.44 and 352,224.16

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Solution

The fourth proportional to 638,709.28, 881,401.44 and 352,224.16 is: 486,059.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,709.28 : 881,401.44 = 352,224.16 : x
  2. Step 2: Convert to fraction form
    638,709.28/881,401.44 = 352,224.16/x
  3. Step 3: Cross multiply
    638,709.28x = 881,401.44 × 352,224.16
  4. Step 4: Simplify right side
    638,709.28x = 310,450,881,826.79
  5. Step 5: Solve for x
    x = 310,450,881,826.79/638,709.28
  6. Step 6: Final answer
    x = 486,059.76

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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.