Home / 738,395.50-1,018,986.33-398,863.75

Finding the Fourth Proportional to 738,395.50, 1,018,986.33 and 398,863.75

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Solution

The fourth proportional to 738,395.50, 1,018,986.33 and 398,863.75 is: 550,432.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,395.50 : 1,018,986.33 = 398,863.75 : x
  2. Step 2: Convert to fraction form
    738,395.50/1,018,986.33 = 398,863.75/x
  3. Step 3: Cross multiply
    738,395.50x = 1,018,986.33 × 398,863.75
  4. Step 4: Simplify right side
    738,395.50x = 406,436,708,782.54
  5. Step 5: Solve for x
    x = 406,436,708,782.54/738,395.50
  6. Step 6: Final answer
    x = 550,432.27

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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.