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Finding the Fourth Proportional to 636,585.28, 878,272.43 and 360,913.54

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Solution

The fourth proportional to 636,585.28, 878,272.43 and 360,913.54 is: 497,938.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,585.28 : 878,272.43 = 360,913.54 : x
  2. Step 2: Convert to fraction form
    636,585.28/878,272.43 = 360,913.54/x
  3. Step 3: Cross multiply
    636,585.28x = 878,272.43 × 360,913.54
  4. Step 4: Simplify right side
    636,585.28x = 316,980,409,991.14
  5. Step 5: Solve for x
    x = 316,980,409,991.14/636,585.28
  6. Step 6: Final answer
    x = 497,938.64

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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.