Home / 876,170.56-1,313,934.88-426,756.64

Finding the Fourth Proportional to 876,170.56, 1,313,934.88 and 426,756.64

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Solution

The fourth proportional to 876,170.56, 1,313,934.88 and 426,756.64 is: 639,978.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,170.56 : 1,313,934.88 = 426,756.64 : x
  2. Step 2: Convert to fraction form
    876,170.56/1,313,934.88 = 426,756.64/x
  3. Step 3: Cross multiply
    876,170.56x = 1,313,934.88 × 426,756.64
  4. Step 4: Simplify right side
    876,170.56x = 560,730,434,567.60
  5. Step 5: Solve for x
    x = 560,730,434,567.60/876,170.56
  6. Step 6: Final answer
    x = 639,978.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.