Home / 860,990.56-1,291,776.48-381,152.17

Finding the Fourth Proportional to 860,990.56, 1,291,776.48 and 381,152.17

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Solution

The fourth proportional to 860,990.56, 1,291,776.48 and 381,152.17 is: 571,856.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,990.56 : 1,291,776.48 = 381,152.17 : x
  2. Step 2: Convert to fraction form
    860,990.56/1,291,776.48 = 381,152.17/x
  3. Step 3: Cross multiply
    860,990.56x = 1,291,776.48 × 381,152.17
  4. Step 4: Simplify right side
    860,990.56x = 492,363,410,121.68
  5. Step 5: Solve for x
    x = 492,363,410,121.68/860,990.56
  6. Step 6: Final answer
    x = 571,856.92

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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.