Home / 1,521,637.40-2,102,046.90-1,215,311.60

Finding the Fourth Proportional to 1,521,637.40, 2,102,046.90 and 1,215,311.60

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Solution

The fourth proportional to 1,521,637.40, 2,102,046.90 and 1,215,311.60 is: 1,678,876.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521,637.40 : 2,102,046.90 = 1,215,311.60 : x
  2. Step 2: Convert to fraction form
    1,521,637.40/2,102,046.90 = 1,215,311.60/x
  3. Step 3: Cross multiply
    1,521,637.40x = 2,102,046.90 × 1,215,311.60
  4. Step 4: Simplify right side
    1,521,637.40x = 2,554,641,981,314.04
  5. Step 5: Solve for x
    x = 2,554,641,981,314.04/1,521,637.40
  6. Step 6: Final answer
    x = 1,678,876.97

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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.