Home / 1,079,162.40-1,617,706.80-839,143.20

Finding the Fourth Proportional to 1,079,162.40, 1,617,706.80 and 839,143.20

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Solution

The fourth proportional to 1,079,162.40, 1,617,706.80 and 839,143.20 is: 1,257,908.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,162.40 : 1,617,706.80 = 839,143.20 : x
  2. Step 2: Convert to fraction form
    1,079,162.40/1,617,706.80 = 839,143.20/x
  3. Step 3: Cross multiply
    1,079,162.40x = 1,617,706.80 × 839,143.20
  4. Step 4: Simplify right side
    1,079,162.40x = 1,357,487,660,813.76
  5. Step 5: Solve for x
    x = 1,357,487,660,813.76/1,079,162.40
  6. Step 6: Final answer
    x = 1,257,908.60

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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.