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Finding the Fourth Proportional to 602,800.26, 831,905.94 and 398,496.88

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Solution

The fourth proportional to 602,800.26, 831,905.94 and 398,496.88 is: 549,953.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,800.26 : 831,905.94 = 398,496.88 : x
  2. Step 2: Convert to fraction form
    602,800.26/831,905.94 = 398,496.88/x
  3. Step 3: Cross multiply
    602,800.26x = 831,905.94 × 398,496.88
  4. Step 4: Simplify right side
    602,800.26x = 331,511,921,543.47
  5. Step 5: Solve for x
    x = 331,511,921,543.47/602,800.26
  6. Step 6: Final answer
    x = 549,953.18

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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.