Home / 919,148.25-1,268,406.35-511,241.31

Finding the Fourth Proportional to 919,148.25, 1,268,406.35 and 511,241.31

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Solution

The fourth proportional to 919,148.25, 1,268,406.35 and 511,241.31 is: 705,502.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,148.25 : 1,268,406.35 = 511,241.31 : x
  2. Step 2: Convert to fraction form
    919,148.25/1,268,406.35 = 511,241.31/x
  3. Step 3: Cross multiply
    919,148.25x = 1,268,406.35 × 511,241.31
  4. Step 4: Simplify right side
    919,148.25x = 648,461,723,986.32
  5. Step 5: Solve for x
    x = 648,461,723,986.32/919,148.25
  6. Step 6: Final answer
    x = 705,502.87

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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.