Home / 839,721.81-1,259,452.85-307,118.28

Finding the Fourth Proportional to 839,721.81, 1,259,452.85 and 307,118.28

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Solution

The fourth proportional to 839,721.81, 1,259,452.85 and 307,118.28 is: 460,629.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,721.81 : 1,259,452.85 = 307,118.28 : x
  2. Step 2: Convert to fraction form
    839,721.81/1,259,452.85 = 307,118.28/x
  3. Step 3: Cross multiply
    839,721.81x = 1,259,452.85 × 307,118.28
  4. Step 4: Simplify right side
    839,721.81x = 386,800,991,497.51
  5. Step 5: Solve for x
    x = 386,800,991,497.51/839,721.81
  6. Step 6: Final answer
    x = 460,629.92

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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.