Home / 674,923.72-931,629.29-388,557.94

Finding the Fourth Proportional to 674,923.72, 931,629.29 and 388,557.94

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Solution

The fourth proportional to 674,923.72, 931,629.29 and 388,557.94 is: 536,344.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,923.72 : 931,629.29 = 388,557.94 : x
  2. Step 2: Convert to fraction form
    674,923.72/931,629.29 = 388,557.94/x
  3. Step 3: Cross multiply
    674,923.72x = 931,629.29 × 388,557.94
  4. Step 4: Simplify right side
    674,923.72x = 361,991,957,766.06
  5. Step 5: Solve for x
    x = 361,991,957,766.06/674,923.72
  6. Step 6: Final answer
    x = 536,344.99

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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.