Home / 769,531.61-1,061,953.86-420,673.54

Finding the Fourth Proportional to 769,531.61, 1,061,953.86 and 420,673.54

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Solution

The fourth proportional to 769,531.61, 1,061,953.86 and 420,673.54 is: 580,529.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,531.61 : 1,061,953.86 = 420,673.54 : x
  2. Step 2: Convert to fraction form
    769,531.61/1,061,953.86 = 420,673.54/x
  3. Step 3: Cross multiply
    769,531.61x = 1,061,953.86 × 420,673.54
  4. Step 4: Simplify right side
    769,531.61x = 446,735,886,947.98
  5. Step 5: Solve for x
    x = 446,735,886,947.98/769,531.61
  6. Step 6: Final answer
    x = 580,529.61

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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.