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Finding the Fourth Proportional to 879,999, 1,214,398.62 and 477,591

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Solution

The fourth proportional to 879,999, 1,214,398.62 and 477,591 is: 659,075.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,999 : 1,214,398.62 = 477,591 : x
  2. Step 2: Convert to fraction form
    879,999/1,214,398.62 = 477,591/x
  3. Step 3: Cross multiply
    879,999x = 1,214,398.62 × 477,591
  4. Step 4: Simplify right side
    879,999x = 579,985,851,324.42
  5. Step 5: Solve for x
    x = 579,985,851,324.42/879,999
  6. Step 6: Final answer
    x = 659,075.58

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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.