Home / 638,707.28-881,398.68-352,222.16

Finding the Fourth Proportional to 638,707.28, 881,398.68 and 352,222.16

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Solution

The fourth proportional to 638,707.28, 881,398.68 and 352,222.16 is: 486,057.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,707.28 : 881,398.68 = 352,222.16 : x
  2. Step 2: Convert to fraction form
    638,707.28/881,398.68 = 352,222.16/x
  3. Step 3: Cross multiply
    638,707.28x = 881,398.68 × 352,222.16
  4. Step 4: Simplify right side
    638,707.28x = 310,448,146,890.75
  5. Step 5: Solve for x
    x = 310,448,146,890.75/638,707.28
  6. Step 6: Final answer
    x = 486,057.00

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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.