Home / 684,115.20-1,026,285.12-210,800.64

Finding the Fourth Proportional to 684,115.20, 1,026,285.12 and 210,800.64

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Solution

The fourth proportional to 684,115.20, 1,026,285.12 and 210,800.64 is: 316,235.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,115.20 : 1,026,285.12 = 210,800.64 : x
  2. Step 2: Convert to fraction form
    684,115.20/1,026,285.12 = 210,800.64/x
  3. Step 3: Cross multiply
    684,115.20x = 1,026,285.12 × 210,800.64
  4. Step 4: Simplify right side
    684,115.20x = 216,341,560,118.48
  5. Step 5: Solve for x
    x = 216,341,560,118.48/684,115.20
  6. Step 6: Final answer
    x = 316,235.57

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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.