Home / 838,309.80-1,257,464.70-305,653.80

Finding the Fourth Proportional to 838,309.80, 1,257,464.70 and 305,653.80

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Solution

The fourth proportional to 838,309.80, 1,257,464.70 and 305,653.80 is: 458,480.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,309.80 : 1,257,464.70 = 305,653.80 : x
  2. Step 2: Convert to fraction form
    838,309.80/1,257,464.70 = 305,653.80/x
  3. Step 3: Cross multiply
    838,309.80x = 1,257,464.70 × 305,653.80
  4. Step 4: Simplify right side
    838,309.80x = 384,348,863,920.86
  5. Step 5: Solve for x
    x = 384,348,863,920.86/838,309.80
  6. Step 6: Final answer
    x = 458,480.70

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Double scale
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Similar ratio
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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.