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Finding the Fourth Proportional to 609,009.83, 840,403.58 and 347,375.47

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Solution

The fourth proportional to 609,009.83, 840,403.58 and 347,375.47 is: 479,361.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,009.83 : 840,403.58 = 347,375.47 : x
  2. Step 2: Convert to fraction form
    609,009.83/840,403.58 = 347,375.47/x
  3. Step 3: Cross multiply
    609,009.83x = 840,403.58 × 347,375.47
  4. Step 4: Simplify right side
    609,009.83x = 291,935,588,592.18
  5. Step 5: Solve for x
    x = 291,935,588,592.18/609,009.83
  6. Step 6: Final answer
    x = 479,361.05

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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.