Home / 689,990.40-1,035,029.52-216,694.44

Finding the Fourth Proportional to 689,990.40, 1,035,029.52 and 216,694.44

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Solution

The fourth proportional to 689,990.40, 1,035,029.52 and 216,694.44 is: 325,055.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,990.40 : 1,035,029.52 = 216,694.44 : x
  2. Step 2: Convert to fraction form
    689,990.40/1,035,029.52 = 216,694.44/x
  3. Step 3: Cross multiply
    689,990.40x = 1,035,029.52 × 216,694.44
  4. Step 4: Simplify right side
    689,990.40x = 224,285,142,219.87
  5. Step 5: Solve for x
    x = 224,285,142,219.87/689,990.40
  6. Step 6: Final answer
    x = 325,055.45

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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.