Home / 1,290,260.16-1,780,619.64-717,309.84

Finding the Fourth Proportional to 1,290,260.16, 1,780,619.64 and 717,309.84

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Solution

The fourth proportional to 1,290,260.16, 1,780,619.64 and 717,309.84 is: 989,921.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,260.16 : 1,780,619.64 = 717,309.84 : x
  2. Step 2: Convert to fraction form
    1,290,260.16/1,780,619.64 = 717,309.84/x
  3. Step 3: Cross multiply
    1,290,260.16x = 1,780,619.64 × 717,309.84
  4. Step 4: Simplify right side
    1,290,260.16x = 1,277,255,989,069.26
  5. Step 5: Solve for x
    x = 1,277,255,989,069.26/1,290,260.16
  6. Step 6: Final answer
    x = 989,921.28

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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.