Home / 879,135.26-1,213,257.50-491,947.30

Finding the Fourth Proportional to 879,135.26, 1,213,257.50 and 491,947.30

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Solution

The fourth proportional to 879,135.26, 1,213,257.50 and 491,947.30 is: 678,915.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,135.26 : 1,213,257.50 = 491,947.30 : x
  2. Step 2: Convert to fraction form
    879,135.26/1,213,257.50 = 491,947.30/x
  3. Step 3: Cross multiply
    879,135.26x = 1,213,257.50 × 491,947.30
  4. Step 4: Simplify right side
    879,135.26x = 596,858,751,329.75
  5. Step 5: Solve for x
    x = 596,858,751,329.75/879,135.26
  6. Step 6: Final answer
    x = 678,915.72

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1.5x scale

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.