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Finding the Fourth Proportional to 879,880.50, 1,214,235.09 and 477,472.50

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Solution

The fourth proportional to 879,880.50, 1,214,235.09 and 477,472.50 is: 658,912.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,880.50 : 1,214,235.09 = 477,472.50 : x
  2. Step 2: Convert to fraction form
    879,880.50/1,214,235.09 = 477,472.50/x
  3. Step 3: Cross multiply
    879,880.50x = 1,214,235.09 × 477,472.50
  4. Step 4: Simplify right side
    879,880.50x = 579,763,864,010.03
  5. Step 5: Solve for x
    x = 579,763,864,010.03/879,880.50
  6. Step 6: Final answer
    x = 658,912.05

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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.