Home / 905,682.57-1,249,741.56-543,121.71

Finding the Fourth Proportional to 905,682.57, 1,249,741.56 and 543,121.71

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Solution

The fourth proportional to 905,682.57, 1,249,741.56 and 543,121.71 is: 749,447.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,682.57 : 1,249,741.56 = 543,121.71 : x
  2. Step 2: Convert to fraction form
    905,682.57/1,249,741.56 = 543,121.71/x
  3. Step 3: Cross multiply
    905,682.57x = 1,249,741.56 × 543,121.71
  4. Step 4: Simplify right side
    905,682.57x = 678,761,767,420.38
  5. Step 5: Solve for x
    x = 678,761,767,420.38/905,682.57
  6. Step 6: Final answer
    x = 749,447.76

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Double scale
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Similar ratio
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1.5x scale

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.