Home / 769,475.25-1,061,879.18-420,622.77

Finding the Fourth Proportional to 769,475.25, 1,061,879.18 and 420,622.77

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Solution

The fourth proportional to 769,475.25, 1,061,879.18 and 420,622.77 is: 580,461.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,475.25 : 1,061,879.18 = 420,622.77 : x
  2. Step 2: Convert to fraction form
    769,475.25/1,061,879.18 = 420,622.77/x
  3. Step 3: Cross multiply
    769,475.25x = 1,061,879.18 × 420,622.77
  4. Step 4: Simplify right side
    769,475.25x = 446,650,559,993.82
  5. Step 5: Solve for x
    x = 446,650,559,993.82/769,475.25
  6. Step 6: Final answer
    x = 580,461.24

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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.