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Finding the Fourth Proportional to 872,885.84, 1,204,538.46 and 490,889.84

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Solution

The fourth proportional to 872,885.84, 1,204,538.46 and 490,889.84 is: 677,403.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,885.84 : 1,204,538.46 = 490,889.84 : x
  2. Step 2: Convert to fraction form
    872,885.84/1,204,538.46 = 490,889.84/x
  3. Step 3: Cross multiply
    872,885.84x = 1,204,538.46 × 490,889.84
  4. Step 4: Simplify right side
    872,885.84x = 591,295,691,903.25
  5. Step 5: Solve for x
    x = 591,295,691,903.25/872,885.84
  6. Step 6: Final answer
    x = 677,403.24

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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.