Home / 738,161.20-1,018,662.45-398,629.42

Finding the Fourth Proportional to 738,161.20, 1,018,662.45 and 398,629.42

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Solution

The fourth proportional to 738,161.20, 1,018,662.45 and 398,629.42 is: 550,108.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,161.20 : 1,018,662.45 = 398,629.42 : x
  2. Step 2: Convert to fraction form
    738,161.20/1,018,662.45 = 398,629.42/x
  3. Step 3: Cross multiply
    738,161.20x = 1,018,662.45 × 398,629.42
  4. Step 4: Simplify right side
    738,161.20x = 406,068,821,619.28
  5. Step 5: Solve for x
    x = 406,068,821,619.28/738,161.20
  6. Step 6: Final answer
    x = 550,108.60

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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.