Home / 538,726.21-743,441.93-309,298.30

Finding the Fourth Proportional to 538,726.21, 743,441.93 and 309,298.30

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Solution

The fourth proportional to 538,726.21, 743,441.93 and 309,298.30 is: 426,831.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,726.21 : 743,441.93 = 309,298.30 : x
  2. Step 2: Convert to fraction form
    538,726.21/743,441.93 = 309,298.30/x
  3. Step 3: Cross multiply
    538,726.21x = 743,441.93 × 309,298.30
  4. Step 4: Simplify right side
    538,726.21x = 229,945,325,097.72
  5. Step 5: Solve for x
    x = 229,945,325,097.72/538,726.21
  6. Step 6: Final answer
    x = 426,831.52

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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.