Home / 838,201.35-1,256,421.63-411,145.86

Finding the Fourth Proportional to 838,201.35, 1,256,421.63 and 411,145.86

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Solution

The fourth proportional to 838,201.35, 1,256,421.63 and 411,145.86 is: 616,286.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,201.35 : 1,256,421.63 = 411,145.86 : x
  2. Step 2: Convert to fraction form
    838,201.35/1,256,421.63 = 411,145.86/x
  3. Step 3: Cross multiply
    838,201.35x = 1,256,421.63 × 411,145.86
  4. Step 4: Simplify right side
    838,201.35x = 516,572,551,588.95
  5. Step 5: Solve for x
    x = 516,572,551,588.95/838,201.35
  6. Step 6: Final answer
    x = 616,286.95

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.