Home / 919,145.25-1,268,402.22-511,238.34

Finding the Fourth Proportional to 919,145.25, 1,268,402.22 and 511,238.34

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Solution

The fourth proportional to 919,145.25, 1,268,402.22 and 511,238.34 is: 705,498.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,145.25 : 1,268,402.22 = 511,238.34 : x
  2. Step 2: Convert to fraction form
    919,145.25/1,268,402.22 = 511,238.34/x
  3. Step 3: Cross multiply
    919,145.25x = 1,268,402.22 × 511,238.34
  4. Step 4: Simplify right side
    919,145.25x = 648,455,845,405.12
  5. Step 5: Solve for x
    x = 648,455,845,405.12/919,145.25
  6. Step 6: Final answer
    x = 705,498.77

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1.5x scale

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.