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Finding the Fourth Proportional to 666,628.84, 919,941.19 and 360,698.46

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Solution

The fourth proportional to 666,628.84, 919,941.19 and 360,698.46 is: 497,760.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,628.84 : 919,941.19 = 360,698.46 : x
  2. Step 2: Convert to fraction form
    666,628.84/919,941.19 = 360,698.46/x
  3. Step 3: Cross multiply
    666,628.84x = 919,941.19 × 360,698.46
  4. Step 4: Simplify right side
    666,628.84x = 331,821,370,523.57
  5. Step 5: Solve for x
    x = 331,821,370,523.57/666,628.84
  6. Step 6: Final answer
    x = 497,760.30

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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.