Home / 905,000.80-1,357,796.44-431,624.64

Finding the Fourth Proportional to 905,000.80, 1,357,796.44 and 431,624.64

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Solution

The fourth proportional to 905,000.80, 1,357,796.44 and 431,624.64 is: 647,577.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,000.80 : 1,357,796.44 = 431,624.64 : x
  2. Step 2: Convert to fraction form
    905,000.80/1,357,796.44 = 431,624.64/x
  3. Step 3: Cross multiply
    905,000.80x = 1,357,796.44 × 431,624.64
  4. Step 4: Simplify right side
    905,000.80x = 586,058,399,608.28
  5. Step 5: Solve for x
    x = 586,058,399,608.28/905,000.80
  6. Step 6: Final answer
    x = 647,577.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.