Home / 628,865.20-943,297.80-313,937.20

Finding the Fourth Proportional to 628,865.20, 943,297.80 and 313,937.20

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Solution

The fourth proportional to 628,865.20, 943,297.80 and 313,937.20 is: 470,905.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,865.20 : 943,297.80 = 313,937.20 : x
  2. Step 2: Convert to fraction form
    628,865.20/943,297.80 = 313,937.20/x
  3. Step 3: Cross multiply
    628,865.20x = 943,297.80 × 313,937.20
  4. Step 4: Simplify right side
    628,865.20x = 296,136,270,098.16
  5. Step 5: Solve for x
    x = 296,136,270,098.16/628,865.20
  6. Step 6: Final answer
    x = 470,905.80

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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.