Home / 685,339.80-1,028,009.70-444,802.20

Finding the Fourth Proportional to 685,339.80, 1,028,009.70 and 444,802.20

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Solution

The fourth proportional to 685,339.80, 1,028,009.70 and 444,802.20 is: 667,203.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,339.80 : 1,028,009.70 = 444,802.20 : x
  2. Step 2: Convert to fraction form
    685,339.80/1,028,009.70 = 444,802.20/x
  3. Step 3: Cross multiply
    685,339.80x = 1,028,009.70 × 444,802.20
  4. Step 4: Simplify right side
    685,339.80x = 457,260,976,181.34
  5. Step 5: Solve for x
    x = 457,260,976,181.34/685,339.80
  6. Step 6: Final answer
    x = 667,203.30

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1.5x scale

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.