Home / 1,428,439.21-1,971,276.23-783,853.77

Finding the Fourth Proportional to 1,428,439.21, 1,971,276.23 and 783,853.77

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Solution

The fourth proportional to 1,428,439.21, 1,971,276.23 and 783,853.77 is: 1,081,734.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,439.21 : 1,971,276.23 = 783,853.77 : x
  2. Step 2: Convert to fraction form
    1,428,439.21/1,971,276.23 = 783,853.77/x
  3. Step 3: Cross multiply
    1,428,439.21x = 1,971,276.23 × 783,853.77
  4. Step 4: Simplify right side
    1,428,439.21x = 1,545,192,304,596.89
  5. Step 5: Solve for x
    x = 1,545,192,304,596.89/1,428,439.21
  6. Step 6: Final answer
    x = 1,081,734.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.