Home / 1,328,170.80-1,992,256.20-430,237.20

Finding the Fourth Proportional to 1,328,170.80, 1,992,256.20 and 430,237.20

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Solution

The fourth proportional to 1,328,170.80, 1,992,256.20 and 430,237.20 is: 645,355.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,170.80 : 1,992,256.20 = 430,237.20 : x
  2. Step 2: Convert to fraction form
    1,328,170.80/1,992,256.20 = 430,237.20/x
  3. Step 3: Cross multiply
    1,328,170.80x = 1,992,256.20 × 430,237.20
  4. Step 4: Simplify right side
    1,328,170.80x = 857,142,729,170.64
  5. Step 5: Solve for x
    x = 857,142,729,170.64/1,328,170.80
  6. Step 6: Final answer
    x = 645,355.80

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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.