Home / 811,901.52-1,120,426.16-449,350.32

Finding the Fourth Proportional to 811,901.52, 1,120,426.16 and 449,350.32

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Solution

The fourth proportional to 811,901.52, 1,120,426.16 and 449,350.32 is: 620,104.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,901.52 : 1,120,426.16 = 449,350.32 : x
  2. Step 2: Convert to fraction form
    811,901.52/1,120,426.16 = 449,350.32/x
  3. Step 3: Cross multiply
    811,901.52x = 1,120,426.16 × 449,350.32
  4. Step 4: Simplify right side
    811,901.52x = 503,463,853,532.37
  5. Step 5: Solve for x
    x = 503,463,853,532.37/811,901.52
  6. Step 6: Final answer
    x = 620,104.58

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Double scale
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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.