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Finding the Fourth Proportional to 551,412.33, 760,952.05 and 309,694.93

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Solution

The fourth proportional to 551,412.33, 760,952.05 and 309,694.93 is: 427,380.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,412.33 : 760,952.05 = 309,694.93 : x
  2. Step 2: Convert to fraction form
    551,412.33/760,952.05 = 309,694.93/x
  3. Step 3: Cross multiply
    551,412.33x = 760,952.05 × 309,694.93
  4. Step 4: Simplify right side
    551,412.33x = 235,662,989,181.49
  5. Step 5: Solve for x
    x = 235,662,989,181.49/551,412.33
  6. Step 6: Final answer
    x = 427,380.70

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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.