Home / 679,424.02-1,019,415.39-300,144.58

Finding the Fourth Proportional to 679,424.02, 1,019,415.39 and 300,144.58

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Solution

The fourth proportional to 679,424.02, 1,019,415.39 and 300,144.58 is: 450,340.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,424.02 : 1,019,415.39 = 300,144.58 : x
  2. Step 2: Convert to fraction form
    679,424.02/1,019,415.39 = 300,144.58/x
  3. Step 3: Cross multiply
    679,424.02x = 1,019,415.39 × 300,144.58
  4. Step 4: Simplify right side
    679,424.02x = 305,972,004,077.09
  5. Step 5: Solve for x
    x = 305,972,004,077.09/679,424.02
  6. Step 6: Final answer
    x = 450,340.28

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Double scale
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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.