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Finding the Fourth Proportional to 607,190.78, 837,572.02 and 392,330.86

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Solution

The fourth proportional to 607,190.78, 837,572.02 and 392,330.86 is: 541,189.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,190.78 : 837,572.02 = 392,330.86 : x
  2. Step 2: Convert to fraction form
    607,190.78/837,572.02 = 392,330.86/x
  3. Step 3: Cross multiply
    607,190.78x = 837,572.02 × 392,330.86
  4. Step 4: Simplify right side
    607,190.78x = 328,605,347,843.78
  5. Step 5: Solve for x
    x = 328,605,347,843.78/607,190.78
  6. Step 6: Final answer
    x = 541,189.62

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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.