Home / 628,864.20-943,296.30-313,936.20

Finding the Fourth Proportional to 628,864.20, 943,296.30 and 313,936.20

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Solution

The fourth proportional to 628,864.20, 943,296.30 and 313,936.20 is: 470,904.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,864.20 : 943,296.30 = 313,936.20 : x
  2. Step 2: Convert to fraction form
    628,864.20/943,296.30 = 313,936.20/x
  3. Step 3: Cross multiply
    628,864.20x = 943,296.30 × 313,936.20
  4. Step 4: Simplify right side
    628,864.20x = 296,134,855,896.06
  5. Step 5: Solve for x
    x = 296,134,855,896.06/628,864.20
  6. Step 6: Final answer
    x = 470,904.30

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.