Home / 687,142.53-1,030,696.92-266,418.54

Finding the Fourth Proportional to 687,142.53, 1,030,696.92 and 266,418.54

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Solution

The fourth proportional to 687,142.53, 1,030,696.92 and 266,418.54 is: 399,621.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,142.53 : 1,030,696.92 = 266,418.54 : x
  2. Step 2: Convert to fraction form
    687,142.53/1,030,696.92 = 266,418.54/x
  3. Step 3: Cross multiply
    687,142.53x = 1,030,696.92 × 266,418.54
  4. Step 4: Simplify right side
    687,142.53x = 274,596,768,608.90
  5. Step 5: Solve for x
    x = 274,596,768,608.90/687,142.53
  6. Step 6: Final answer
    x = 399,621.27

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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.