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Finding the Fourth Proportional to 551,452.08, 760,999.14 and 309,738.36

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Solution

The fourth proportional to 551,452.08, 760,999.14 and 309,738.36 is: 427,436.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,452.08 : 760,999.14 = 309,738.36 : x
  2. Step 2: Convert to fraction form
    551,452.08/760,999.14 = 309,738.36/x
  3. Step 3: Cross multiply
    551,452.08x = 760,999.14 × 309,738.36
  4. Step 4: Simplify right side
    551,452.08x = 235,710,625,585.01
  5. Step 5: Solve for x
    x = 235,710,625,585.01/551,452.08
  6. Step 6: Final answer
    x = 427,436.28

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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.