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Finding the Fourth Proportional to 679,907.44, 938,289.94 and 373,991.70

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Solution

The fourth proportional to 679,907.44, 938,289.94 and 373,991.70 is: 516,118.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,907.44 : 938,289.94 = 373,991.70 : x
  2. Step 2: Convert to fraction form
    679,907.44/938,289.94 = 373,991.70/x
  3. Step 3: Cross multiply
    679,907.44x = 938,289.94 × 373,991.70
  4. Step 4: Simplify right side
    679,907.44x = 350,912,649,753.50
  5. Step 5: Solve for x
    x = 350,912,649,753.50/679,907.44
  6. Step 6: Final answer
    x = 516,118.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.