Home / 840,650.63-1,260,986.94-279,685.13

Finding the Fourth Proportional to 840,650.63, 1,260,986.94 and 279,685.13

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Solution

The fourth proportional to 840,650.63, 1,260,986.94 and 279,685.13 is: 419,531.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,650.63 : 1,260,986.94 = 279,685.13 : x
  2. Step 2: Convert to fraction form
    840,650.63/1,260,986.94 = 279,685.13/x
  3. Step 3: Cross multiply
    840,650.63x = 1,260,986.94 × 279,685.13
  4. Step 4: Simplify right side
    840,650.63x = 352,679,289,937.27
  5. Step 5: Solve for x
    x = 352,679,289,937.27/840,650.63
  6. Step 6: Final answer
    x = 419,531.35

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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.