Home / 638,579.04-881,278.74-352,098.66

Finding the Fourth Proportional to 638,579.04, 881,278.74 and 352,098.66

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Solution

The fourth proportional to 638,579.04, 881,278.74 and 352,098.66 is: 485,918.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,579.04 : 881,278.74 = 352,098.66 : x
  2. Step 2: Convert to fraction form
    638,579.04/881,278.74 = 352,098.66/x
  3. Step 3: Cross multiply
    638,579.04x = 881,278.74 × 352,098.66
  4. Step 4: Simplify right side
    638,579.04x = 310,297,063,440.49
  5. Step 5: Solve for x
    x = 310,297,063,440.49/638,579.04
  6. Step 6: Final answer
    x = 485,918.02

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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.