Home / 538,478.04-743,134.77-309,109.59

Finding the Fourth Proportional to 538,478.04, 743,134.77 and 309,109.59

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Solution

The fourth proportional to 538,478.04, 743,134.77 and 309,109.59 is: 426,591.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,478.04 : 743,134.77 = 309,109.59 : x
  2. Step 2: Convert to fraction form
    538,478.04/743,134.77 = 309,109.59/x
  3. Step 3: Cross multiply
    538,478.04x = 743,134.77 × 309,109.59
  4. Step 4: Simplify right side
    538,478.04x = 229,710,084,069.44
  5. Step 5: Solve for x
    x = 229,710,084,069.44/538,478.04
  6. Step 6: Final answer
    x = 426,591.37

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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.