Home / 427,004.49-640,518-186,994.92

Finding the Fourth Proportional to 427,004.49, 640,518 and 186,994.92

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Solution

The fourth proportional to 427,004.49, 640,518 and 186,994.92 is: 280,497.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,004.49 : 640,518 = 186,994.92 : x
  2. Step 2: Convert to fraction form
    427,004.49/640,518 = 186,994.92/x
  3. Step 3: Cross multiply
    427,004.49x = 640,518 × 186,994.92
  4. Step 4: Simplify right side
    427,004.49x = 119,773,612,168.56
  5. Step 5: Solve for x
    x = 119,773,612,168.56/427,004.49
  6. Step 6: Final answer
    x = 280,497.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.