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Finding the Fourth Proportional to 476,752.54, 657,643.62 and 285,655.22

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Solution

The fourth proportional to 476,752.54, 657,643.62 and 285,655.22 is: 394,039.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,752.54 : 657,643.62 = 285,655.22 : x
  2. Step 2: Convert to fraction form
    476,752.54/657,643.62 = 285,655.22/x
  3. Step 3: Cross multiply
    476,752.54x = 657,643.62 × 285,655.22
  4. Step 4: Simplify right side
    476,752.54x = 187,859,328,236.20
  5. Step 5: Solve for x
    x = 187,859,328,236.20/476,752.54
  6. Step 6: Final answer
    x = 394,039.49

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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.