Home / 628,901.20-943,351.80-313,973.20

Finding the Fourth Proportional to 628,901.20, 943,351.80 and 313,973.20

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Solution

The fourth proportional to 628,901.20, 943,351.80 and 313,973.20 is: 470,959.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,901.20 : 943,351.80 = 313,973.20 : x
  2. Step 2: Convert to fraction form
    628,901.20/943,351.80 = 313,973.20/x
  3. Step 3: Cross multiply
    628,901.20x = 943,351.80 × 313,973.20
  4. Step 4: Simplify right side
    628,901.20x = 296,187,183,371.76
  5. Step 5: Solve for x
    x = 296,187,183,371.76/628,901.20
  6. Step 6: Final answer
    x = 470,959.80

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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.