Home / 839,633.66-1,259,637.60-307,142.90

Finding the Fourth Proportional to 839,633.66, 1,259,637.60 and 307,142.90

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Solution

The fourth proportional to 839,633.66, 1,259,637.60 and 307,142.90 is: 460,782.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,633.66 : 1,259,637.60 = 307,142.90 : x
  2. Step 2: Convert to fraction form
    839,633.66/1,259,637.60 = 307,142.90/x
  3. Step 3: Cross multiply
    839,633.66x = 1,259,637.60 × 307,142.90
  4. Step 4: Simplify right side
    839,633.66x = 386,888,745,413.04
  5. Step 5: Solve for x
    x = 386,888,745,413.04/839,633.66
  6. Step 6: Final answer
    x = 460,782.80

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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.