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Finding the Fourth Proportional to 978,409.33, 1,350,268.75 and 564,963.56

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Solution

The fourth proportional to 978,409.33, 1,350,268.75 and 564,963.56 is: 779,686.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,409.33 : 1,350,268.75 = 564,963.56 : x
  2. Step 2: Convert to fraction form
    978,409.33/1,350,268.75 = 564,963.56/x
  3. Step 3: Cross multiply
    978,409.33x = 1,350,268.75 × 564,963.56
  4. Step 4: Simplify right side
    978,409.33x = 762,852,638,975.12
  5. Step 5: Solve for x
    x = 762,852,638,975.12/978,409.33
  6. Step 6: Final answer
    x = 779,686.60

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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.