Home / 754,109.84-1,040,678.34-409,946.43

Finding the Fourth Proportional to 754,109.84, 1,040,678.34 and 409,946.43

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Solution

The fourth proportional to 754,109.84, 1,040,678.34 and 409,946.43 is: 565,729.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    754,109.84 : 1,040,678.34 = 409,946.43 : x
  2. Step 2: Convert to fraction form
    754,109.84/1,040,678.34 = 409,946.43/x
  3. Step 3: Cross multiply
    754,109.84x = 1,040,678.34 × 409,946.43
  4. Step 4: Simplify right side
    754,109.84x = 426,622,371,118.62
  5. Step 5: Solve for x
    x = 426,622,371,118.62/754,109.84
  6. Step 6: Final answer
    x = 565,729.75

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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.