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Finding the Fourth Proportional to 499,440.60, 689,273.06 and 284,649.86

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Solution

The fourth proportional to 499,440.60, 689,273.06 and 284,649.86 is: 392,842.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,440.60 : 689,273.06 = 284,649.86 : x
  2. Step 2: Convert to fraction form
    499,440.60/689,273.06 = 284,649.86/x
  3. Step 3: Cross multiply
    499,440.60x = 689,273.06 × 284,649.86
  4. Step 4: Simplify right side
    499,440.60x = 196,201,480,330.71
  5. Step 5: Solve for x
    x = 196,201,480,330.71/499,440.60
  6. Step 6: Final answer
    x = 392,842.47

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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.