Home / 738,679.29-1,019,378.01-399,147.54

Finding the Fourth Proportional to 738,679.29, 1,019,378.01 and 399,147.54

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Solution

The fourth proportional to 738,679.29, 1,019,378.01 and 399,147.54 is: 550,823.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,679.29 : 1,019,378.01 = 399,147.54 : x
  2. Step 2: Convert to fraction form
    738,679.29/1,019,378.01 = 399,147.54/x
  3. Step 3: Cross multiply
    738,679.29x = 1,019,378.01 × 399,147.54
  4. Step 4: Simplify right side
    738,679.29x = 406,882,225,021.60
  5. Step 5: Solve for x
    x = 406,882,225,021.60/738,679.29
  6. Step 6: Final answer
    x = 550,823.92

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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.