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Finding the Fourth Proportional to 671,077.36, 925,733.85 and 398,951.71

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Solution

The fourth proportional to 671,077.36, 925,733.85 and 398,951.71 is: 550,343.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,077.36 : 925,733.85 = 398,951.71 : x
  2. Step 2: Convert to fraction form
    671,077.36/925,733.85 = 398,951.71/x
  3. Step 3: Cross multiply
    671,077.36x = 925,733.85 × 398,951.71
  4. Step 4: Simplify right side
    671,077.36x = 369,323,102,462.38
  5. Step 5: Solve for x
    x = 369,323,102,462.38/671,077.36
  6. Step 6: Final answer
    x = 550,343.56

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Double scale
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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.