Home / 839,427.20-1,259,140.80-306,771.20

Finding the Fourth Proportional to 839,427.20, 1,259,140.80 and 306,771.20

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Solution

The fourth proportional to 839,427.20, 1,259,140.80 and 306,771.20 is: 460,156.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,427.20 : 1,259,140.80 = 306,771.20 : x
  2. Step 2: Convert to fraction form
    839,427.20/1,259,140.80 = 306,771.20/x
  3. Step 3: Cross multiply
    839,427.20x = 1,259,140.80 × 306,771.20
  4. Step 4: Simplify right side
    839,427.20x = 386,268,134,184.96
  5. Step 5: Solve for x
    x = 386,268,134,184.96/839,427.20
  6. Step 6: Final answer
    x = 460,156.80

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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.