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Finding the Fourth Proportional to 579,087.54, 798,142.80 and 385,148.46

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Solution

The fourth proportional to 579,087.54, 798,142.80 and 385,148.46 is: 530,841.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,087.54 : 798,142.80 = 385,148.46 : x
  2. Step 2: Convert to fraction form
    579,087.54/798,142.80 = 385,148.46/x
  3. Step 3: Cross multiply
    579,087.54x = 798,142.80 × 385,148.46
  4. Step 4: Simplify right side
    579,087.54x = 307,403,470,280.09
  5. Step 5: Solve for x
    x = 307,403,470,280.09/579,087.54
  6. Step 6: Final answer
    x = 530,841.11

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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.