Home / 891,280.56-1,229,969.20-509,306.43

Finding the Fourth Proportional to 891,280.56, 1,229,969.20 and 509,306.43

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Solution

The fourth proportional to 891,280.56, 1,229,969.20 and 509,306.43 is: 702,844.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,280.56 : 1,229,969.20 = 509,306.43 : x
  2. Step 2: Convert to fraction form
    891,280.56/1,229,969.20 = 509,306.43/x
  3. Step 3: Cross multiply
    891,280.56x = 1,229,969.20 × 509,306.43
  4. Step 4: Simplify right side
    891,280.56x = 626,431,222,261.96
  5. Step 5: Solve for x
    x = 626,431,222,261.96/891,280.56
  6. Step 6: Final answer
    x = 702,844.03

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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.