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Finding the Fourth Proportional to 609,616.38, 840,749.31 and 367,847.58

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Solution

The fourth proportional to 609,616.38, 840,749.31 and 367,847.58 is: 507,315.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,616.38 : 840,749.31 = 367,847.58 : x
  2. Step 2: Convert to fraction form
    609,616.38/840,749.31 = 367,847.58/x
  3. Step 3: Cross multiply
    609,616.38x = 840,749.31 × 367,847.58
  4. Step 4: Simplify right side
    609,616.38x = 309,267,599,070.17
  5. Step 5: Solve for x
    x = 309,267,599,070.17/609,616.38
  6. Step 6: Final answer
    x = 507,315.11

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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.