Home / 1,292,157.54-1,783,194.30-711,448.20

Finding the Fourth Proportional to 1,292,157.54, 1,783,194.30 and 711,448.20

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Solution

The fourth proportional to 1,292,157.54, 1,783,194.30 and 711,448.20 is: 981,807.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,157.54 : 1,783,194.30 = 711,448.20 : x
  2. Step 2: Convert to fraction form
    1,292,157.54/1,783,194.30 = 711,448.20/x
  3. Step 3: Cross multiply
    1,292,157.54x = 1,783,194.30 × 711,448.20
  4. Step 4: Simplify right side
    1,292,157.54x = 1,268,650,374,985.26
  5. Step 5: Solve for x
    x = 1,268,650,374,985.26/1,292,157.54
  6. Step 6: Final answer
    x = 981,807.82

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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.