Home / 638,998.29-881,817.59-352,518.38

Finding the Fourth Proportional to 638,998.29, 881,817.59 and 352,518.38

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Solution

The fourth proportional to 638,998.29, 881,817.59 and 352,518.38 is: 486,475.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,998.29 : 881,817.59 = 352,518.38 : x
  2. Step 2: Convert to fraction form
    638,998.29/881,817.59 = 352,518.38/x
  3. Step 3: Cross multiply
    638,998.29x = 881,817.59 × 352,518.38
  4. Step 4: Simplify right side
    638,998.29x = 310,856,908,282.30
  5. Step 5: Solve for x
    x = 310,856,908,282.30/638,998.29
  6. Step 6: Final answer
    x = 486,475.34

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Double scale
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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.