Home / 684,133.20-944,066.88-378,191.34

Finding the Fourth Proportional to 684,133.20, 944,066.88 and 378,191.34

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Solution

The fourth proportional to 684,133.20, 944,066.88 and 378,191.34 is: 521,883.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,133.20 : 944,066.88 = 378,191.34 : x
  2. Step 2: Convert to fraction form
    684,133.20/944,066.88 = 378,191.34/x
  3. Step 3: Cross multiply
    684,133.20x = 944,066.88 × 378,191.34
  4. Step 4: Simplify right side
    684,133.20x = 357,037,918,396.82
  5. Step 5: Solve for x
    x = 357,037,918,396.82/684,133.20
  6. Step 6: Final answer
    x = 521,883.63

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Half scale
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Double scale
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Similar ratio
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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.