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Finding the Fourth Proportional to 627,922,430.94, 866,532,956.91 and 349,529,720.46

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Solution

The fourth proportional to 627,922,430.94, 866,532,956.91 and 349,529,720.46 is: 482,351,015.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,922,430.94 : 866,532,956.91 = 349,529,720.46 : x
  2. Step 2: Convert to fraction form
    627,922,430.94/866,532,956.91 = 349,529,720.46/x
  3. Step 3: Cross multiply
    627,922,430.94x = 866,532,956.91 × 349,529,720.46
  4. Step 4: Simplify right side
    627,922,430.94x = 302,879,022,198,129,472
  5. Step 5: Solve for x
    x = 302,879,022,198,129,472/627,922,430.94
  6. Step 6: Final answer
    x = 482,351,015.47

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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.