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Finding the Fourth Proportional to 673,921.26, 930,014.55 and 368,003.88

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Solution

The fourth proportional to 673,921.26, 930,014.55 and 368,003.88 is: 507,847.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,921.26 : 930,014.55 = 368,003.88 : x
  2. Step 2: Convert to fraction form
    673,921.26/930,014.55 = 368,003.88/x
  3. Step 3: Cross multiply
    673,921.26x = 930,014.55 × 368,003.88
  4. Step 4: Simplify right side
    673,921.26x = 342,248,962,856.45
  5. Step 5: Solve for x
    x = 342,248,962,856.45/673,921.26
  6. Step 6: Final answer
    x = 507,847.11

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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.