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Finding the Fourth Proportional to 879,847, 1,214,192.10 and 477,439

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Solution

The fourth proportional to 879,847, 1,214,192.10 and 477,439 is: 658,867.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,847 : 1,214,192.10 = 477,439 : x
  2. Step 2: Convert to fraction form
    879,847/1,214,192.10 = 477,439/x
  3. Step 3: Cross multiply
    879,847x = 1,214,192.10 × 477,439
  4. Step 4: Simplify right side
    879,847x = 579,702,662,031.90
  5. Step 5: Solve for x
    x = 579,702,662,031.90/879,847
  6. Step 6: Final answer
    x = 658,867.58

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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.