Home / 811,011.22-1,216,240.02-331,164.28

Finding the Fourth Proportional to 811,011.22, 1,216,240.02 and 331,164.28

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Solution

The fourth proportional to 811,011.22, 1,216,240.02 and 331,164.28 is: 496,633.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,011.22 : 1,216,240.02 = 331,164.28 : x
  2. Step 2: Convert to fraction form
    811,011.22/1,216,240.02 = 331,164.28/x
  3. Step 3: Cross multiply
    811,011.22x = 1,216,240.02 × 331,164.28
  4. Step 4: Simplify right side
    811,011.22x = 402,775,250,530.49
  5. Step 5: Solve for x
    x = 402,775,250,530.49/811,011.22
  6. Step 6: Final answer
    x = 496,633.39

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Double scale
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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.