Home / 899,190.72-1,240,868.52-491,283.78

Finding the Fourth Proportional to 899,190.72, 1,240,868.52 and 491,283.78

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Solution

The fourth proportional to 899,190.72, 1,240,868.52 and 491,283.78 is: 677,963.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,190.72 : 1,240,868.52 = 491,283.78 : x
  2. Step 2: Convert to fraction form
    899,190.72/1,240,868.52 = 491,283.78/x
  3. Step 3: Cross multiply
    899,190.72x = 1,240,868.52 × 491,283.78
  4. Step 4: Simplify right side
    899,190.72x = 609,618,576,988.61
  5. Step 5: Solve for x
    x = 609,618,576,988.61/899,190.72
  6. Step 6: Final answer
    x = 677,963.60

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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.