Home / 684,321.87-1,026,416.78-210,880.11

Finding the Fourth Proportional to 684,321.87, 1,026,416.78 and 210,880.11

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Solution

The fourth proportional to 684,321.87, 1,026,416.78 and 210,880.11 is: 316,299.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,321.87 : 1,026,416.78 = 210,880.11 : x
  2. Step 2: Convert to fraction form
    684,321.87/1,026,416.78 = 210,880.11/x
  3. Step 3: Cross multiply
    684,321.87x = 1,026,416.78 × 210,880.11
  4. Step 4: Simplify right side
    684,321.87x = 216,450,882,417.85
  5. Step 5: Solve for x
    x = 216,450,882,417.85/684,321.87
  6. Step 6: Final answer
    x = 316,299.82

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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.