Home / 1,721,871.41-2,379,459.77-1,291,404.20

Finding the Fourth Proportional to 1,721,871.41, 2,379,459.77 and 1,291,404.20

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Solution

The fourth proportional to 1,721,871.41, 2,379,459.77 and 1,291,404.20 is: 1,784,595.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721,871.41 : 2,379,459.77 = 1,291,404.20 : x
  2. Step 2: Convert to fraction form
    1,721,871.41/2,379,459.77 = 1,291,404.20/x
  3. Step 3: Cross multiply
    1,721,871.41x = 2,379,459.77 × 1,291,404.20
  4. Step 4: Simplify right side
    1,721,871.41x = 3,072,844,349,886.19
  5. Step 5: Solve for x
    x = 3,072,844,349,886.19/1,721,871.41
  6. Step 6: Final answer
    x = 1,784,595.72

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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.