Home / 1,238,520.40-1,857,780.60-528,620.20

Finding the Fourth Proportional to 1,238,520.40, 1,857,780.60 and 528,620.20

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Solution

The fourth proportional to 1,238,520.40, 1,857,780.60 and 528,620.20 is: 792,930.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,520.40 : 1,857,780.60 = 528,620.20 : x
  2. Step 2: Convert to fraction form
    1,238,520.40/1,857,780.60 = 528,620.20/x
  3. Step 3: Cross multiply
    1,238,520.40x = 1,857,780.60 × 528,620.20
  4. Step 4: Simplify right side
    1,238,520.40x = 982,060,352,328.12
  5. Step 5: Solve for x
    x = 982,060,352,328.12/1,238,520.40
  6. Step 6: Final answer
    x = 792,930.30

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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.