Home / 780,000.20-1,168,906.80-620,349.20

Finding the Fourth Proportional to 780,000.20, 1,168,906.80 and 620,349.20

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Solution

The fourth proportional to 780,000.20, 1,168,906.80 and 620,349.20 is: 929,654.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,000.20 : 1,168,906.80 = 620,349.20 : x
  2. Step 2: Convert to fraction form
    780,000.20/1,168,906.80 = 620,349.20/x
  3. Step 3: Cross multiply
    780,000.20x = 1,168,906.80 × 620,349.20
  4. Step 4: Simplify right side
    780,000.20x = 725,130,398,254.56
  5. Step 5: Solve for x
    x = 725,130,398,254.56/780,000.20
  6. Step 6: Final answer
    x = 929,654.12

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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.