Home / 538,918.34-743,682.29-309,314.04

Finding the Fourth Proportional to 538,918.34, 743,682.29 and 309,314.04

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Solution

The fourth proportional to 538,918.34, 743,682.29 and 309,314.04 is: 426,839.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,918.34 : 743,682.29 = 309,314.04 : x
  2. Step 2: Convert to fraction form
    538,918.34/743,682.29 = 309,314.04/x
  3. Step 3: Cross multiply
    538,918.34x = 743,682.29 × 309,314.04
  4. Step 4: Simplify right side
    538,918.34x = 230,031,374,314.13
  5. Step 5: Solve for x
    x = 230,031,374,314.13/538,918.34
  6. Step 6: Final answer
    x = 426,839.02

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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.