Home / 738,166.20-1,018,669.34-398,634.42

Finding the Fourth Proportional to 738,166.20, 1,018,669.34 and 398,634.42

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Solution

The fourth proportional to 738,166.20, 1,018,669.34 and 398,634.42 is: 550,115.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,166.20 : 1,018,669.34 = 398,634.42 : x
  2. Step 2: Convert to fraction form
    738,166.20/1,018,669.34 = 398,634.42/x
  3. Step 3: Cross multiply
    738,166.20x = 1,018,669.34 × 398,634.42
  4. Step 4: Simplify right side
    738,166.20x = 406,076,661,522.68
  5. Step 5: Solve for x
    x = 406,076,661,522.68/738,166.20
  6. Step 6: Final answer
    x = 550,115.49

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Double scale
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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.