Home / 741,530.80-1,112,555.40-321,108.40

Finding the Fourth Proportional to 741,530.80, 1,112,555.40 and 321,108.40

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Solution

The fourth proportional to 741,530.80, 1,112,555.40 and 321,108.40 is: 481,774.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    741,530.80 : 1,112,555.40 = 321,108.40 : x
  2. Step 2: Convert to fraction form
    741,530.80/1,112,555.40 = 321,108.40/x
  3. Step 3: Cross multiply
    741,530.80x = 1,112,555.40 × 321,108.40
  4. Step 4: Simplify right side
    741,530.80x = 357,250,884,405.36
  5. Step 5: Solve for x
    x = 357,250,884,405.36/741,530.80
  6. Step 6: Final answer
    x = 481,774.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.