Home / 780,282.50-1,076,789.85-422,586.50

Finding the Fourth Proportional to 780,282.50, 1,076,789.85 and 422,586.50

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Solution

The fourth proportional to 780,282.50, 1,076,789.85 and 422,586.50 is: 583,169.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,282.50 : 1,076,789.85 = 422,586.50 : x
  2. Step 2: Convert to fraction form
    780,282.50/1,076,789.85 = 422,586.50/x
  3. Step 3: Cross multiply
    780,282.50x = 1,076,789.85 × 422,586.50
  4. Step 4: Simplify right side
    780,282.50x = 455,036,853,947.03
  5. Step 5: Solve for x
    x = 455,036,853,947.03/780,282.50
  6. Step 6: Final answer
    x = 583,169.37

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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.