Home / 638,583.60-881,285.04-352,103.34

Finding the Fourth Proportional to 638,583.60, 881,285.04 and 352,103.34

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Solution

The fourth proportional to 638,583.60, 881,285.04 and 352,103.34 is: 485,924.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,583.60 : 881,285.04 = 352,103.34 : x
  2. Step 2: Convert to fraction form
    638,583.60/881,285.04 = 352,103.34/x
  3. Step 3: Cross multiply
    638,583.60x = 881,285.04 × 352,103.34
  4. Step 4: Simplify right side
    638,583.60x = 310,303,406,076.03
  5. Step 5: Solve for x
    x = 310,303,406,076.03/638,583.60
  6. Step 6: Final answer
    x = 485,924.48

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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.