Home / 891,690.78-1,335,252.60-491,887.20

Finding the Fourth Proportional to 891,690.78, 1,335,252.60 and 491,887.20

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Solution

The fourth proportional to 891,690.78, 1,335,252.60 and 491,887.20 is: 736,571.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,690.78 : 1,335,252.60 = 491,887.20 : x
  2. Step 2: Convert to fraction form
    891,690.78/1,335,252.60 = 491,887.20/x
  3. Step 3: Cross multiply
    891,690.78x = 1,335,252.60 × 491,887.20
  4. Step 4: Simplify right side
    891,690.78x = 656,793,662,706.72
  5. Step 5: Solve for x
    x = 656,793,662,706.72/891,690.78
  6. Step 6: Final answer
    x = 736,571.10

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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.