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Finding the Fourth Proportional to 617,608, 851,622.24 and 402,348.88

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Solution

The fourth proportional to 617,608, 851,622.24 and 402,348.88 is: 554,800.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,608 : 851,622.24 = 402,348.88 : x
  2. Step 2: Convert to fraction form
    617,608/851,622.24 = 402,348.88/x
  3. Step 3: Cross multiply
    617,608x = 851,622.24 × 402,348.88
  4. Step 4: Simplify right side
    617,608x = 342,649,254,447.09
  5. Step 5: Solve for x
    x = 342,649,254,447.09/617,608
  6. Step 6: Final answer
    x = 554,800.54

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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.