Home / 837,151.12-1,155,236.68-455,178.20

Finding the Fourth Proportional to 837,151.12, 1,155,236.68 and 455,178.20

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Solution

The fourth proportional to 837,151.12, 1,155,236.68 and 455,178.20 is: 628,128.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    837,151.12 : 1,155,236.68 = 455,178.20 : x
  2. Step 2: Convert to fraction form
    837,151.12/1,155,236.68 = 455,178.20/x
  3. Step 3: Cross multiply
    837,151.12x = 1,155,236.68 × 455,178.20
  4. Step 4: Simplify right side
    837,151.12x = 525,838,552,576.38
  5. Step 5: Solve for x
    x = 525,838,552,576.38/837,151.12
  6. Step 6: Final answer
    x = 628,128.59

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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.