Home / 780,004.20-1,168,912.80-620,353.20

Finding the Fourth Proportional to 780,004.20, 1,168,912.80 and 620,353.20

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Solution

The fourth proportional to 780,004.20, 1,168,912.80 and 620,353.20 is: 929,660.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,004.20 : 1,168,912.80 = 620,353.20 : x
  2. Step 2: Convert to fraction form
    780,004.20/1,168,912.80 = 620,353.20/x
  3. Step 3: Cross multiply
    780,004.20x = 1,168,912.80 × 620,353.20
  4. Step 4: Simplify right side
    780,004.20x = 725,138,796,000.96
  5. Step 5: Solve for x
    x = 725,138,796,000.96/780,004.20
  6. Step 6: Final answer
    x = 929,660.12

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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.