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Finding the Fourth Proportional to 617,608.06, 851,622.32 and 402,348.94

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Solution

The fourth proportional to 617,608.06, 851,622.32 and 402,348.94 is: 554,800.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,608.06 : 851,622.32 = 402,348.94 : x
  2. Step 2: Convert to fraction form
    617,608.06/851,622.32 = 402,348.94/x
  3. Step 3: Cross multiply
    617,608.06x = 851,622.32 × 402,348.94
  4. Step 4: Simplify right side
    617,608.06x = 342,649,337,732.34
  5. Step 5: Solve for x
    x = 342,649,337,732.34/617,608.06
  6. Step 6: Final answer
    x = 554,800.63

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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.