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Finding the Fourth Proportional to 551,268.35, 825,696.93 and 390,858.05

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Solution

The fourth proportional to 551,268.35, 825,696.93 and 390,858.05 is: 585,432.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,268.35 : 825,696.93 = 390,858.05 : x
  2. Step 2: Convert to fraction form
    551,268.35/825,696.93 = 390,858.05/x
  3. Step 3: Cross multiply
    551,268.35x = 825,696.93 × 390,858.05
  4. Step 4: Simplify right side
    551,268.35x = 322,730,289,452.95
  5. Step 5: Solve for x
    x = 322,730,289,452.95/551,268.35
  6. Step 6: Final answer
    x = 585,432.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.