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Finding the Fourth Proportional to 448,637.46, 619,186.86 and 287,674.26

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Solution

The fourth proportional to 448,637.46, 619,186.86 and 287,674.26 is: 397,033.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,637.46 : 619,186.86 = 287,674.26 : x
  2. Step 2: Convert to fraction form
    448,637.46/619,186.86 = 287,674.26/x
  3. Step 3: Cross multiply
    448,637.46x = 619,186.86 × 287,674.26
  4. Step 4: Simplify right side
    448,637.46x = 178,124,121,752.22
  5. Step 5: Solve for x
    x = 178,124,121,752.22/448,637.46
  6. Step 6: Final answer
    x = 397,033.55

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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.