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Finding the Fourth Proportional to 636,345.94, 878,160.27 and 345,960.31

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Solution

The fourth proportional to 636,345.94, 878,160.27 and 345,960.31 is: 477,426.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,345.94 : 878,160.27 = 345,960.31 : x
  2. Step 2: Convert to fraction form
    636,345.94/878,160.27 = 345,960.31/x
  3. Step 3: Cross multiply
    636,345.94x = 878,160.27 × 345,960.31
  4. Step 4: Simplify right side
    636,345.94x = 303,808,599,238.88
  5. Step 5: Solve for x
    x = 303,808,599,238.88/636,345.94
  6. Step 6: Final answer
    x = 477,426.79

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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.