Home / 684,339.60-1,026,412.20-211,072.80

Finding the Fourth Proportional to 684,339.60, 1,026,412.20 and 211,072.80

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Solution

The fourth proportional to 684,339.60, 1,026,412.20 and 211,072.80 is: 316,579.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,339.60 : 1,026,412.20 = 211,072.80 : x
  2. Step 2: Convert to fraction form
    684,339.60/1,026,412.20 = 211,072.80/x
  3. Step 3: Cross multiply
    684,339.60x = 1,026,412.20 × 211,072.80
  4. Step 4: Simplify right side
    684,339.60x = 216,647,697,008.16
  5. Step 5: Solve for x
    x = 216,647,697,008.16/684,339.60
  6. Step 6: Final answer
    x = 316,579.22

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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.