Home / 825,445.82-1,139,126.97-498,713.40

Finding the Fourth Proportional to 825,445.82, 1,139,126.97 and 498,713.40

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Solution

The fourth proportional to 825,445.82, 1,139,126.97 and 498,713.40 is: 688,231.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,445.82 : 1,139,126.97 = 498,713.40 : x
  2. Step 2: Convert to fraction form
    825,445.82/1,139,126.97 = 498,713.40/x
  3. Step 3: Cross multiply
    825,445.82x = 1,139,126.97 × 498,713.40
  4. Step 4: Simplify right side
    825,445.82x = 568,097,883,906.99
  5. Step 5: Solve for x
    x = 568,097,883,906.99/825,445.82
  6. Step 6: Final answer
    x = 688,231.59

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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.