Home / 684,131.20-1,026,309.12-210,816.64

Finding the Fourth Proportional to 684,131.20, 1,026,309.12 and 210,816.64

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Solution

The fourth proportional to 684,131.20, 1,026,309.12 and 210,816.64 is: 316,259.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,131.20 : 1,026,309.12 = 210,816.64 : x
  2. Step 2: Convert to fraction form
    684,131.20/1,026,309.12 = 210,816.64/x
  3. Step 3: Cross multiply
    684,131.20x = 1,026,309.12 × 210,816.64
  4. Step 4: Simplify right side
    684,131.20x = 216,363,040,279.76
  5. Step 5: Solve for x
    x = 216,363,040,279.76/684,131.20
  6. Step 6: Final answer
    x = 316,259.57

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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.