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Finding the Fourth Proportional to 661,907,569.60, 913,496,965.40 and 494,352,937.52

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Solution

The fourth proportional to 661,907,569.60, 913,496,965.40 and 494,352,937.52 is: 682,255,240.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,907,569.60 : 913,496,965.40 = 494,352,937.52 : x
  2. Step 2: Convert to fraction form
    661,907,569.60/913,496,965.40 = 494,352,937.52/x
  3. Step 3: Cross multiply
    661,907,569.60x = 913,496,965.40 × 494,352,937.52
  4. Step 4: Simplify right side
    661,907,569.60x = 451,589,908,261,095,744
  5. Step 5: Solve for x
    x = 451,589,908,261,095,744/661,907,569.60
  6. Step 6: Final answer
    x = 682,255,240.76

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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.