Home / 1,721,872.17-2,379,460.80-1,291,404.96

Finding the Fourth Proportional to 1,721,872.17, 2,379,460.80 and 1,291,404.96

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Solution

The fourth proportional to 1,721,872.17, 2,379,460.80 and 1,291,404.96 is: 1,784,596.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721,872.17 : 2,379,460.80 = 1,291,404.96 : x
  2. Step 2: Convert to fraction form
    1,721,872.17/2,379,460.80 = 1,291,404.96/x
  3. Step 3: Cross multiply
    1,721,872.17x = 2,379,460.80 × 1,291,404.96
  4. Step 4: Simplify right side
    1,721,872.17x = 3,072,847,479,245.57
  5. Step 5: Solve for x
    x = 3,072,847,479,245.57/1,721,872.17
  6. Step 6: Final answer
    x = 1,784,596.75

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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.