Home / 1,328,906.20-1,993,100.10-430,130.20

Finding the Fourth Proportional to 1,328,906.20, 1,993,100.10 and 430,130.20

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Solution

The fourth proportional to 1,328,906.20, 1,993,100.10 and 430,130.20 is: 645,111.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,906.20 : 1,993,100.10 = 430,130.20 : x
  2. Step 2: Convert to fraction form
    1,328,906.20/1,993,100.10 = 430,130.20/x
  3. Step 3: Cross multiply
    1,328,906.20x = 1,993,100.10 × 430,130.20
  4. Step 4: Simplify right side
    1,328,906.20x = 857,292,544,633.02
  5. Step 5: Solve for x
    x = 857,292,544,633.02/1,328,906.20
  6. Step 6: Final answer
    x = 645,111.40

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Double scale
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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.