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Finding the Fourth Proportional to 486,065.40, 670,830.83 and 282,072.51

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Solution

The fourth proportional to 486,065.40, 670,830.83 and 282,072.51 is: 389,295.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,065.40 : 670,830.83 = 282,072.51 : x
  2. Step 2: Convert to fraction form
    486,065.40/670,830.83 = 282,072.51/x
  3. Step 3: Cross multiply
    486,065.40x = 670,830.83 × 282,072.51
  4. Step 4: Simplify right side
    486,065.40x = 189,222,936,003.48
  5. Step 5: Solve for x
    x = 189,222,936,003.48/486,065.40
  6. Step 6: Final answer
    x = 389,295.22

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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.