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Finding the Fourth Proportional to 579,820.89, 800,240.31 and 353,597.61

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Solution

The fourth proportional to 579,820.89, 800,240.31 and 353,597.61 is: 488,018.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,820.89 : 800,240.31 = 353,597.61 : x
  2. Step 2: Convert to fraction form
    579,820.89/800,240.31 = 353,597.61/x
  3. Step 3: Cross multiply
    579,820.89x = 800,240.31 × 353,597.61
  4. Step 4: Simplify right side
    579,820.89x = 282,963,061,041.66
  5. Step 5: Solve for x
    x = 282,963,061,041.66/579,820.89
  6. Step 6: Final answer
    x = 488,018.05

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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.