Home / 639,406.14-882,380.55-352,926.30

Finding the Fourth Proportional to 639,406.14, 882,380.55 and 352,926.30

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Solution

The fourth proportional to 639,406.14, 882,380.55 and 352,926.30 is: 487,038.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,406.14 : 882,380.55 = 352,926.30 : x
  2. Step 2: Convert to fraction form
    639,406.14/882,380.55 = 352,926.30/x
  3. Step 3: Cross multiply
    639,406.14x = 882,380.55 × 352,926.30
  4. Step 4: Simplify right side
    639,406.14x = 311,415,302,703.47
  5. Step 5: Solve for x
    x = 311,415,302,703.47/639,406.14
  6. Step 6: Final answer
    x = 487,038.34

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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.