Finding the Fourth Proportional to 1,010,640,807.80, 1,515,961,211.70 and 617,799,620.60
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Solution
The fourth proportional to 1,010,640,807.80, 1,515,961,211.70 and 617,799,620.60 is: 926,699,430.90
Step by Step Solution
- Step 1: Write the proportion equation
1,010,640,807.80 : 1,515,961,211.70 = 617,799,620.60 : x - Step 2: Convert to fraction form
1,010,640,807.80/1,515,961,211.70 = 617,799,620.60/x - Step 3: Cross multiply
1,010,640,807.80x = 1,515,961,211.70 × 617,799,620.60 - Step 4: Simplify right side
1,010,640,807.80x = 936,560,261,432,576,384 - Step 5: Solve for x
x = 936,560,261,432,576,384/1,010,640,807.80 - Step 6: Final answer
x = 926,699,430.90
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1.5x scale
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.