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Finding the Fourth Proportional to 872,952.17, 1,204,662.39 and 490,978.95

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Solution

The fourth proportional to 872,952.17, 1,204,662.39 and 490,978.95 is: 677,544.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,952.17 : 1,204,662.39 = 490,978.95 : x
  2. Step 2: Convert to fraction form
    872,952.17/1,204,662.39 = 490,978.95/x
  3. Step 3: Cross multiply
    872,952.17x = 1,204,662.39 × 490,978.95
  4. Step 4: Simplify right side
    872,952.17x = 591,463,875,346.69
  5. Step 5: Solve for x
    x = 591,463,875,346.69/872,952.17
  6. Step 6: Final answer
    x = 677,544.42

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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.