Home / 769,311.59-1,061,653.23-420,459.02

Finding the Fourth Proportional to 769,311.59, 1,061,653.23 and 420,459.02

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Solution

The fourth proportional to 769,311.59, 1,061,653.23 and 420,459.02 is: 580,235.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,311.59 : 1,061,653.23 = 420,459.02 : x
  2. Step 2: Convert to fraction form
    769,311.59/1,061,653.23 = 420,459.02/x
  3. Step 3: Cross multiply
    769,311.59x = 1,061,653.23 × 420,459.02
  4. Step 4: Simplify right side
    769,311.59x = 446,381,669,255.07
  5. Step 5: Solve for x
    x = 446,381,669,255.07/769,311.59
  6. Step 6: Final answer
    x = 580,235.21

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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.