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Finding the Fourth Proportional to 482,803.86, 666,115.20 and 278,827.86

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Solution

The fourth proportional to 482,803.86, 666,115.20 and 278,827.86 is: 384,693.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,803.86 : 666,115.20 = 278,827.86 : x
  2. Step 2: Convert to fraction form
    482,803.86/666,115.20 = 278,827.86/x
  3. Step 3: Cross multiply
    482,803.86x = 666,115.20 × 278,827.86
  4. Step 4: Simplify right side
    482,803.86x = 185,731,475,729.47
  5. Step 5: Solve for x
    x = 185,731,475,729.47/482,803.86
  6. Step 6: Final answer
    x = 384,693.44

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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.