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Finding the Fourth Proportional to 421,836.84, 581,529.42 and 300,768.12

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Solution

The fourth proportional to 421,836.84, 581,529.42 and 300,768.12 is: 414,628.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,836.84 : 581,529.42 = 300,768.12 : x
  2. Step 2: Convert to fraction form
    421,836.84/581,529.42 = 300,768.12/x
  3. Step 3: Cross multiply
    421,836.84x = 581,529.42 × 300,768.12
  4. Step 4: Simplify right side
    421,836.84x = 174,905,510,378.09
  5. Step 5: Solve for x
    x = 174,905,510,378.09/421,836.84
  6. Step 6: Final answer
    x = 414,628.34

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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.