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Finding the Fourth Proportional to 679,902.01, 938,245.17 and 373,978.37

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Solution

The fourth proportional to 679,902.01, 938,245.17 and 373,978.37 is: 516,079.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,902.01 : 938,245.17 = 373,978.37 : x
  2. Step 2: Convert to fraction form
    679,902.01/938,245.17 = 373,978.37/x
  3. Step 3: Cross multiply
    679,902.01x = 938,245.17 × 373,978.37
  4. Step 4: Simplify right side
    679,902.01x = 350,883,401,682.59
  5. Step 5: Solve for x
    x = 350,883,401,682.59/679,902.01
  6. Step 6: Final answer
    x = 516,079.37

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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.