Home / 839,927.80-1,259,891.70-307,466.20

Finding the Fourth Proportional to 839,927.80, 1,259,891.70 and 307,466.20

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Solution

The fourth proportional to 839,927.80, 1,259,891.70 and 307,466.20 is: 461,199.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,927.80 : 1,259,891.70 = 307,466.20 : x
  2. Step 2: Convert to fraction form
    839,927.80/1,259,891.70 = 307,466.20/x
  3. Step 3: Cross multiply
    839,927.80x = 1,259,891.70 × 307,466.20
  4. Step 4: Simplify right side
    839,927.80x = 387,374,113,410.54
  5. Step 5: Solve for x
    x = 387,374,113,410.54/839,927.80
  6. Step 6: Final answer
    x = 461,199.30

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Half scale
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Double scale
Find fourth proportional to 839,928.80, 1,259,893.20 and 307,467.20
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.