Finding the Fourth Proportional to 1,010,647,470.80, 1,515,971,206.20 and 617,806,283.60
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Solution
The fourth proportional to 1,010,647,470.80, 1,515,971,206.20 and 617,806,283.60 is: 926,709,425.40
Step by Step Solution
- Step 1: Write the proportion equation
1,010,647,470.80 : 1,515,971,206.20 = 617,806,283.60 : x - Step 2: Convert to fraction form
1,010,647,470.80/1,515,971,206.20 = 617,806,283.60/x - Step 3: Cross multiply
1,010,647,470.80x = 1,515,971,206.20 × 617,806,283.60 - Step 4: Simplify right side
1,010,647,470.80x = 936,576,536,947,031,296 - Step 5: Solve for x
x = 936,576,536,947,031,296/1,010,647,470.80 - Step 6: Final answer
x = 926,709,425.40
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Similar ratio
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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.