Finding the Fourth Proportional to 398,948,033.80, 598,422,050.70 and 245,893,025.80
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Solution
The fourth proportional to 398,948,033.80, 598,422,050.70 and 245,893,025.80 is: 368,839,538.70
Step by Step Solution
- Step 1: Write the proportion equation
398,948,033.80 : 598,422,050.70 = 245,893,025.80 : x - Step 2: Convert to fraction form
398,948,033.80/598,422,050.70 = 245,893,025.80/x - Step 3: Cross multiply
398,948,033.80x = 598,422,050.70 × 245,893,025.80 - Step 4: Simplify right side
398,948,033.80x = 147,147,808,752,064,032 - Step 5: Solve for x
x = 147,147,808,752,064,032/398,948,033.80 - Step 6: Final answer
x = 368,839,538.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.