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Finding the Fourth Proportional to 554,808.44, 765,628.09 and 309,796.98

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Solution

The fourth proportional to 554,808.44, 765,628.09 and 309,796.98 is: 427,515.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,808.44 : 765,628.09 = 309,796.98 : x
  2. Step 2: Convert to fraction form
    554,808.44/765,628.09 = 309,796.98/x
  3. Step 3: Cross multiply
    554,808.44x = 765,628.09 × 309,796.98
  4. Step 4: Simplify right side
    554,808.44x = 237,189,270,085.17
  5. Step 5: Solve for x
    x = 237,189,270,085.17/554,808.44
  6. Step 6: Final answer
    x = 427,515.61

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1.5x scale

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.