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Finding the Fourth Proportional to 679,880.80, 937,680.24 and 475,861.60

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Solution

The fourth proportional to 679,880.80, 937,680.24 and 475,861.60 is: 656,300.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,880.80 : 937,680.24 = 475,861.60 : x
  2. Step 2: Convert to fraction form
    679,880.80/937,680.24 = 475,861.60/x
  3. Step 3: Cross multiply
    679,880.80x = 937,680.24 × 475,861.60
  4. Step 4: Simplify right side
    679,880.80x = 446,206,019,294.78
  5. Step 5: Solve for x
    x = 446,206,019,294.78/679,880.80
  6. Step 6: Final answer
    x = 656,300.37

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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.