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Finding the Fourth Proportional to 519,990.82, 716,893.41 and 412,915.30

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Solution

The fourth proportional to 519,990.82, 716,893.41 and 412,915.30 is: 569,272.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,990.82 : 716,893.41 = 412,915.30 : x
  2. Step 2: Convert to fraction form
    519,990.82/716,893.41 = 412,915.30/x
  3. Step 3: Cross multiply
    519,990.82x = 716,893.41 × 412,915.30
  4. Step 4: Simplify right side
    519,990.82x = 296,016,257,458.17
  5. Step 5: Solve for x
    x = 296,016,257,458.17/519,990.82
  6. Step 6: Final answer
    x = 569,272.08

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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.