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Finding the Fourth Proportional to 636,264.95, 878,062.41 and 345,896.06

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Solution

The fourth proportional to 636,264.95, 878,062.41 and 345,896.06 is: 477,345.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,264.95 : 878,062.41 = 345,896.06 : x
  2. Step 2: Convert to fraction form
    636,264.95/878,062.41 = 345,896.06/x
  3. Step 3: Cross multiply
    636,264.95x = 878,062.41 × 345,896.06
  4. Step 4: Simplify right side
    636,264.95x = 303,718,323,662.79
  5. Step 5: Solve for x
    x = 303,718,323,662.79/636,264.95
  6. Step 6: Final answer
    x = 477,345.68

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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.