Home / 1,290,256.77-1,780,453.48-717,262.05

Finding the Fourth Proportional to 1,290,256.77, 1,780,453.48 and 717,262.05

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Solution

The fourth proportional to 1,290,256.77, 1,780,453.48 and 717,262.05 is: 989,765.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,256.77 : 1,780,453.48 = 717,262.05 : x
  2. Step 2: Convert to fraction form
    1,290,256.77/1,780,453.48 = 717,262.05/x
  3. Step 3: Cross multiply
    1,290,256.77x = 1,780,453.48 × 717,262.05
  4. Step 4: Simplify right side
    1,290,256.77x = 1,277,051,712,994.43
  5. Step 5: Solve for x
    x = 1,277,051,712,994.43/1,290,256.77
  6. Step 6: Final answer
    x = 989,765.56

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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.