Home / 780,130.70-1,076,176.90-493,816.89

Finding the Fourth Proportional to 780,130.70, 1,076,176.90 and 493,816.89

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Solution

The fourth proportional to 780,130.70, 1,076,176.90 and 493,816.89 is: 681,211.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,130.70 : 1,076,176.90 = 493,816.89 : x
  2. Step 2: Convert to fraction form
    780,130.70/1,076,176.90 = 493,816.89/x
  3. Step 3: Cross multiply
    780,130.70x = 1,076,176.90 × 493,816.89
  4. Step 4: Simplify right side
    780,130.70x = 531,434,329,847.84
  5. Step 5: Solve for x
    x = 531,434,329,847.84/780,130.70
  6. Step 6: Final answer
    x = 681,211.92

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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.