Home / 1,385,481.26-1,912,282.90-812,705.96

Finding the Fourth Proportional to 1,385,481.26, 1,912,282.90 and 812,705.96

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Solution

The fourth proportional to 1,385,481.26, 1,912,282.90 and 812,705.96 is: 1,121,721.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,481.26 : 1,912,282.90 = 812,705.96 : x
  2. Step 2: Convert to fraction form
    1,385,481.26/1,912,282.90 = 812,705.96/x
  3. Step 3: Cross multiply
    1,385,481.26x = 1,912,282.90 × 812,705.96
  4. Step 4: Simplify right side
    1,385,481.26x = 1,554,123,710,036.08
  5. Step 5: Solve for x
    x = 1,554,123,710,036.08/1,385,481.26
  6. Step 6: Final answer
    x = 1,121,721.21

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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.