Home / 394,148,631.40-543,901,740.78-217,922,795.80

Finding the Fourth Proportional to 394,148,631.40, 543,901,740.78 and 217,922,795.80

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Solution

The fourth proportional to 394,148,631.40, 543,901,740.78 and 217,922,795.80 is: 300,720,536.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,148,631.40 : 543,901,740.78 = 217,922,795.80 : x
  2. Step 2: Convert to fraction form
    394,148,631.40/543,901,740.78 = 217,922,795.80/x
  3. Step 3: Cross multiply
    394,148,631.40x = 543,901,740.78 × 217,922,795.80
  4. Step 4: Simplify right side
    394,148,631.40x = 118,528,587,991,264,480
  5. Step 5: Solve for x
    x = 118,528,587,991,264,480/394,148,631.40
  6. Step 6: Final answer
    x = 300,720,536.74

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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.