Home / 1,130,780.20-1,560,458.56-621,471.64

Finding the Fourth Proportional to 1,130,780.20, 1,560,458.56 and 621,471.64

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Solution

The fourth proportional to 1,130,780.20, 1,560,458.56 and 621,471.64 is: 857,620.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130,780.20 : 1,560,458.56 = 621,471.64 : x
  2. Step 2: Convert to fraction form
    1,130,780.20/1,560,458.56 = 621,471.64/x
  3. Step 3: Cross multiply
    1,130,780.20x = 1,560,458.56 × 621,471.64
  4. Step 4: Simplify right side
    1,130,780.20x = 969,780,740,435.24
  5. Step 5: Solve for x
    x = 969,780,740,435.24/1,130,780.20
  6. Step 6: Final answer
    x = 857,620.91

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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.