Home / 1,187,741.21-1,639,062.74-671,487.30

Finding the Fourth Proportional to 1,187,741.21, 1,639,062.74 and 671,487.30

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Solution

The fourth proportional to 1,187,741.21, 1,639,062.74 and 671,487.30 is: 926,641.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,741.21 : 1,639,062.74 = 671,487.30 : x
  2. Step 2: Convert to fraction form
    1,187,741.21/1,639,062.74 = 671,487.30/x
  3. Step 3: Cross multiply
    1,187,741.21x = 1,639,062.74 × 671,487.30
  4. Step 4: Simplify right side
    1,187,741.21x = 1,100,609,815,491.92
  5. Step 5: Solve for x
    x = 1,100,609,815,491.92/1,187,741.21
  6. Step 6: Final answer
    x = 926,641.10

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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.