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Finding the Fourth Proportional to 680,588.12, 939,203.94 and 374,657.96

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Solution

The fourth proportional to 680,588.12, 939,203.94 and 374,657.96 is: 517,023.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,588.12 : 939,203.94 = 374,657.96 : x
  2. Step 2: Convert to fraction form
    680,588.12/939,203.94 = 374,657.96/x
  3. Step 3: Cross multiply
    680,588.12x = 939,203.94 × 374,657.96
  4. Step 4: Simplify right side
    680,588.12x = 351,880,232,184.36
  5. Step 5: Solve for x
    x = 351,880,232,184.36/680,588.12
  6. Step 6: Final answer
    x = 517,023.76

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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.