Home / 1,721,871.66-2,379,460.12-1,291,404.45

Finding the Fourth Proportional to 1,721,871.66, 2,379,460.12 and 1,291,404.45

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Solution

The fourth proportional to 1,721,871.66, 2,379,460.12 and 1,291,404.45 is: 1,784,596.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721,871.66 : 2,379,460.12 = 1,291,404.45 : x
  2. Step 2: Convert to fraction form
    1,721,871.66/2,379,460.12 = 1,291,404.45/x
  3. Step 3: Cross multiply
    1,721,871.66x = 2,379,460.12 × 1,291,404.45
  4. Step 4: Simplify right side
    1,721,871.66x = 3,072,845,387,565.53
  5. Step 5: Solve for x
    x = 3,072,845,387,565.53/1,721,871.66
  6. Step 6: Final answer
    x = 1,784,596.06

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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.