Home / 1,100,129.34-1,518,183.96-641,561.92

Finding the Fourth Proportional to 1,100,129.34, 1,518,183.96 and 641,561.92

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Solution

The fourth proportional to 1,100,129.34, 1,518,183.96 and 641,561.92 is: 885,358.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100,129.34 : 1,518,183.96 = 641,561.92 : x
  2. Step 2: Convert to fraction form
    1,100,129.34/1,518,183.96 = 641,561.92/x
  3. Step 3: Cross multiply
    1,100,129.34x = 1,518,183.96 × 641,561.92
  4. Step 4: Simplify right side
    1,100,129.34x = 974,009,013,698.27
  5. Step 5: Solve for x
    x = 974,009,013,698.27/1,100,129.34
  6. Step 6: Final answer
    x = 885,358.63

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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.