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Finding the Fourth Proportional to 661,153.88, 912,411.60 and 374,664.44

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Solution

The fourth proportional to 661,153.88, 912,411.60 and 374,664.44 is: 517,047.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,153.88 : 912,411.60 = 374,664.44 : x
  2. Step 2: Convert to fraction form
    661,153.88/912,411.60 = 374,664.44/x
  3. Step 3: Cross multiply
    661,153.88x = 912,411.60 × 374,664.44
  4. Step 4: Simplify right side
    661,153.88x = 341,848,181,163.50
  5. Step 5: Solve for x
    x = 341,848,181,163.50/661,153.88
  6. Step 6: Final answer
    x = 517,047.83

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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.