Home / 860,125.66-1,289,336.27-403,900.21

Finding the Fourth Proportional to 860,125.66, 1,289,336.27 and 403,900.21

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Solution

The fourth proportional to 860,125.66, 1,289,336.27 and 403,900.21 is: 605,450.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,125.66 : 1,289,336.27 = 403,900.21 : x
  2. Step 2: Convert to fraction form
    860,125.66/1,289,336.27 = 403,900.21/x
  3. Step 3: Cross multiply
    860,125.66x = 1,289,336.27 × 403,900.21
  4. Step 4: Simplify right side
    860,125.66x = 520,763,186,339.83
  5. Step 5: Solve for x
    x = 520,763,186,339.83/860,125.66
  6. Step 6: Final answer
    x = 605,450.12

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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.