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Finding the Fourth Proportional to 545,863, 818,460.98 and 261,640.52

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Solution

The fourth proportional to 545,863, 818,460.98 and 261,640.52 is: 392,300.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,863 : 818,460.98 = 261,640.52 : x
  2. Step 2: Convert to fraction form
    545,863/818,460.98 = 261,640.52/x
  3. Step 3: Cross multiply
    545,863x = 818,460.98 × 261,640.52
  4. Step 4: Simplify right side
    545,863x = 214,142,556,406.91
  5. Step 5: Solve for x
    x = 214,142,556,406.91/545,863
  6. Step 6: Final answer
    x = 392,300.92

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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.