Home / 638,540.85-881,192.33-352,071.12

Finding the Fourth Proportional to 638,540.85, 881,192.33 and 352,071.12

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Solution

The fourth proportional to 638,540.85, 881,192.33 and 352,071.12 is: 485,861.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,540.85 : 881,192.33 = 352,071.12 : x
  2. Step 2: Convert to fraction form
    638,540.85/881,192.33 = 352,071.12/x
  3. Step 3: Cross multiply
    638,540.85x = 881,192.33 × 352,071.12
  4. Step 4: Simplify right side
    638,540.85x = 310,242,364,392.19
  5. Step 5: Solve for x
    x = 310,242,364,392.19/638,540.85
  6. Step 6: Final answer
    x = 485,861.42

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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.