Home / 839,900.80-1,259,851.20-307,244.80

Finding the Fourth Proportional to 839,900.80, 1,259,851.20 and 307,244.80

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Solution

The fourth proportional to 839,900.80, 1,259,851.20 and 307,244.80 is: 460,867.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,900.80 : 1,259,851.20 = 307,244.80 : x
  2. Step 2: Convert to fraction form
    839,900.80/1,259,851.20 = 307,244.80/x
  3. Step 3: Cross multiply
    839,900.80x = 1,259,851.20 × 307,244.80
  4. Step 4: Simplify right side
    839,900.80x = 387,082,729,973.76
  5. Step 5: Solve for x
    x = 387,082,729,973.76/839,900.80
  6. Step 6: Final answer
    x = 460,867.20

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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.