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Finding the Fourth Proportional to 666,494.46, 919,758.48 and 360,570

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Solution

The fourth proportional to 666,494.46, 919,758.48 and 360,570 is: 497,584.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,494.46 : 919,758.48 = 360,570 : x
  2. Step 2: Convert to fraction form
    666,494.46/919,758.48 = 360,570/x
  3. Step 3: Cross multiply
    666,494.46x = 919,758.48 × 360,570
  4. Step 4: Simplify right side
    666,494.46x = 331,637,315,133.60
  5. Step 5: Solve for x
    x = 331,637,315,133.60/666,494.46
  6. Step 6: Final answer
    x = 497,584.50

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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.