Home / 738,166.97-1,018,670.38-398,635.22

Finding the Fourth Proportional to 738,166.97, 1,018,670.38 and 398,635.22

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Solution

The fourth proportional to 738,166.97, 1,018,670.38 and 398,635.22 is: 550,116.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,166.97 : 1,018,670.38 = 398,635.22 : x
  2. Step 2: Convert to fraction form
    738,166.97/1,018,670.38 = 398,635.22/x
  3. Step 3: Cross multiply
    738,166.97x = 1,018,670.38 × 398,635.22
  4. Step 4: Simplify right side
    738,166.97x = 406,077,892,588.87
  5. Step 5: Solve for x
    x = 406,077,892,588.87/738,166.97
  6. Step 6: Final answer
    x = 550,116.58

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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.