Home / 1,397,495.57-1,928,612.30-785,840.87

Finding the Fourth Proportional to 1,397,495.57, 1,928,612.30 and 785,840.87

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Solution

The fourth proportional to 1,397,495.57, 1,928,612.30 and 785,840.87 is: 1,084,498.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397,495.57 : 1,928,612.30 = 785,840.87 : x
  2. Step 2: Convert to fraction form
    1,397,495.57/1,928,612.30 = 785,840.87/x
  3. Step 3: Cross multiply
    1,397,495.57x = 1,928,612.30 × 785,840.87
  4. Step 4: Simplify right side
    1,397,495.57x = 1,515,582,368,617.03
  5. Step 5: Solve for x
    x = 1,515,582,368,617.03/1,397,495.57
  6. Step 6: Final answer
    x = 1,084,498.88

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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.