Home / 628,861.20-943,291.80-313,933.20

Finding the Fourth Proportional to 628,861.20, 943,291.80 and 313,933.20

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Solution

The fourth proportional to 628,861.20, 943,291.80 and 313,933.20 is: 470,899.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,861.20 : 943,291.80 = 313,933.20 : x
  2. Step 2: Convert to fraction form
    628,861.20/943,291.80 = 313,933.20/x
  3. Step 3: Cross multiply
    628,861.20x = 943,291.80 × 313,933.20
  4. Step 4: Simplify right side
    628,861.20x = 296,130,613,307.76
  5. Step 5: Solve for x
    x = 296,130,613,307.76/628,861.20
  6. Step 6: Final answer
    x = 470,899.80

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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.