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Finding the Fourth Proportional to 673,899.75, 929,986.15 and 367,978.25

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Solution

The fourth proportional to 673,899.75, 929,986.15 and 367,978.25 is: 507,812.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,899.75 : 929,986.15 = 367,978.25 : x
  2. Step 2: Convert to fraction form
    673,899.75/929,986.15 = 367,978.25/x
  3. Step 3: Cross multiply
    673,899.75x = 929,986.15 × 367,978.25
  4. Step 4: Simplify right side
    673,899.75x = 342,214,677,406.26
  5. Step 5: Solve for x
    x = 342,214,677,406.26/673,899.75
  6. Step 6: Final answer
    x = 507,812.44

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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.