Home / 780,784.20-1,170,082.80-621,133.20

Finding the Fourth Proportional to 780,784.20, 1,170,082.80 and 621,133.20

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Solution

The fourth proportional to 780,784.20, 1,170,082.80 and 621,133.20 is: 930,829.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,784.20 : 1,170,082.80 = 621,133.20 : x
  2. Step 2: Convert to fraction form
    780,784.20/1,170,082.80 = 621,133.20/x
  3. Step 3: Cross multiply
    780,784.20x = 1,170,082.80 × 621,133.20
  4. Step 4: Simplify right side
    780,784.20x = 726,777,273,828.96
  5. Step 5: Solve for x
    x = 726,777,273,828.96/780,784.20
  6. Step 6: Final answer
    x = 930,829.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.