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Finding the Fourth Proportional to 1,308,654, 1,805,242.68 and 878,194.08

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Solution

The fourth proportional to 1,308,654, 1,805,242.68 and 878,194.08 is: 1,211,438.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308,654 : 1,805,242.68 = 878,194.08 : x
  2. Step 2: Convert to fraction form
    1,308,654/1,805,242.68 = 878,194.08/x
  3. Step 3: Cross multiply
    1,308,654x = 1,805,242.68 × 878,194.08
  4. Step 4: Simplify right side
    1,308,654x = 1,585,353,434,539.33
  5. Step 5: Solve for x
    x = 1,585,353,434,539.33/1,308,654
  6. Step 6: Final answer
    x = 1,211,438.19

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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.