Home / 638,995.60-881,816.91-352,515.61

Finding the Fourth Proportional to 638,995.60, 881,816.91 and 352,515.61

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Solution

The fourth proportional to 638,995.60, 881,816.91 and 352,515.61 is: 486,473.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,995.60 : 881,816.91 = 352,515.61 : x
  2. Step 2: Convert to fraction form
    638,995.60/881,816.91 = 352,515.61/x
  3. Step 3: Cross multiply
    638,995.60x = 881,816.91 × 352,515.61
  4. Step 4: Simplify right side
    638,995.60x = 310,854,225,936.97
  5. Step 5: Solve for x
    x = 310,854,225,936.97/638,995.60
  6. Step 6: Final answer
    x = 486,473.19

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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.