Home / 684,123.20-1,026,297.12-210,808.64

Finding the Fourth Proportional to 684,123.20, 1,026,297.12 and 210,808.64

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Solution

The fourth proportional to 684,123.20, 1,026,297.12 and 210,808.64 is: 316,247.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,123.20 : 1,026,297.12 = 210,808.64 : x
  2. Step 2: Convert to fraction form
    684,123.20/1,026,297.12 = 210,808.64/x
  3. Step 3: Cross multiply
    684,123.20x = 1,026,297.12 × 210,808.64
  4. Step 4: Simplify right side
    684,123.20x = 216,352,300,103.12
  5. Step 5: Solve for x
    x = 216,352,300,103.12/684,123.20
  6. Step 6: Final answer
    x = 316,247.57

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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.