Home / 980,267.20-1,470,400.80-389,291.20

Finding the Fourth Proportional to 980,267.20, 1,470,400.80 and 389,291.20

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Solution

The fourth proportional to 980,267.20, 1,470,400.80 and 389,291.20 is: 583,936.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,267.20 : 1,470,400.80 = 389,291.20 : x
  2. Step 2: Convert to fraction form
    980,267.20/1,470,400.80 = 389,291.20/x
  3. Step 3: Cross multiply
    980,267.20x = 1,470,400.80 × 389,291.20
  4. Step 4: Simplify right side
    980,267.20x = 572,414,091,912.96
  5. Step 5: Solve for x
    x = 572,414,091,912.96/980,267.20
  6. Step 6: Final answer
    x = 583,936.80

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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.