Home / 819,980.30-1,230,325.69-440,458.25

Finding the Fourth Proportional to 819,980.30, 1,230,325.69 and 440,458.25

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Solution

The fourth proportional to 819,980.30, 1,230,325.69 and 440,458.25 is: 660,878.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,980.30 : 1,230,325.69 = 440,458.25 : x
  2. Step 2: Convert to fraction form
    819,980.30/1,230,325.69 = 440,458.25/x
  3. Step 3: Cross multiply
    819,980.30x = 1,230,325.69 × 440,458.25
  4. Step 4: Simplify right side
    819,980.30x = 541,907,094,195.81
  5. Step 5: Solve for x
    x = 541,907,094,195.81/819,980.30
  6. Step 6: Final answer
    x = 660,878.19

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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.