Home / 738,382.48-1,018,968.28-398,850.80

Finding the Fourth Proportional to 738,382.48, 1,018,968.28 and 398,850.80

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Solution

The fourth proportional to 738,382.48, 1,018,968.28 and 398,850.80 is: 550,414.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,382.48 : 1,018,968.28 = 398,850.80 : x
  2. Step 2: Convert to fraction form
    738,382.48/1,018,968.28 = 398,850.80/x
  3. Step 3: Cross multiply
    738,382.48x = 1,018,968.28 × 398,850.80
  4. Step 4: Simplify right side
    738,382.48x = 406,416,313,652.62
  5. Step 5: Solve for x
    x = 406,416,313,652.62/738,382.48
  6. Step 6: Final answer
    x = 550,414.35

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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.