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Finding the Fourth Proportional to 879,984, 1,214,377.92 and 477,576

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Solution

The fourth proportional to 879,984, 1,214,377.92 and 477,576 is: 659,054.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,984 : 1,214,377.92 = 477,576 : x
  2. Step 2: Convert to fraction form
    879,984/1,214,377.92 = 477,576/x
  3. Step 3: Cross multiply
    879,984x = 1,214,377.92 × 477,576
  4. Step 4: Simplify right side
    879,984x = 579,957,749,521.92
  5. Step 5: Solve for x
    x = 579,957,749,521.92/879,984
  6. Step 6: Final answer
    x = 659,054.88

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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.