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Finding the Fourth Proportional to 476,111.84, 656,986.48 and 285,120.32

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Solution

The fourth proportional to 476,111.84, 656,986.48 and 285,120.32 is: 393,437.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,111.84 : 656,986.48 = 285,120.32 : x
  2. Step 2: Convert to fraction form
    476,111.84/656,986.48 = 285,120.32/x
  3. Step 3: Cross multiply
    476,111.84x = 656,986.48 × 285,120.32
  4. Step 4: Simplify right side
    476,111.84x = 187,320,191,415.54
  5. Step 5: Solve for x
    x = 187,320,191,415.54/476,111.84
  6. Step 6: Final answer
    x = 393,437.38

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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.