Home / 839,195.40-1,257,310.80-811,444.80

Finding the Fourth Proportional to 839,195.40, 1,257,310.80 and 811,444.80

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Solution

The fourth proportional to 839,195.40, 1,257,310.80 and 811,444.80 is: 1,215,733.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,195.40 : 1,257,310.80 = 811,444.80 : x
  2. Step 2: Convert to fraction form
    839,195.40/1,257,310.80 = 811,444.80/x
  3. Step 3: Cross multiply
    839,195.40x = 1,257,310.80 × 811,444.80
  4. Step 4: Simplify right side
    839,195.40x = 1,020,238,310,643.84
  5. Step 5: Solve for x
    x = 1,020,238,310,643.84/839,195.40
  6. Step 6: Final answer
    x = 1,215,733.92

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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.