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Finding the Fourth Proportional to 879,985, 1,214,379.30 and 477,577

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Solution

The fourth proportional to 879,985, 1,214,379.30 and 477,577 is: 659,056.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,985 : 1,214,379.30 = 477,577 : x
  2. Step 2: Convert to fraction form
    879,985/1,214,379.30 = 477,577/x
  3. Step 3: Cross multiply
    879,985x = 1,214,379.30 × 477,577
  4. Step 4: Simplify right side
    879,985x = 579,959,622,956.10
  5. Step 5: Solve for x
    x = 579,959,622,956.10/879,985
  6. Step 6: Final answer
    x = 659,056.26

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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.