Finding the Fourth Proportional to 1,208,488,332,532.90, 1,668,466,677,374.40 and 769,273,628,621.05
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Solution
The fourth proportional to 1,208,488,332,532.90, 1,668,466,677,374.40 and 769,273,628,621.05 is: 1,062,076,795,103.99
Step by Step Solution
- Step 1: Write the proportion equation
1,208,488,332,532.90 : 1,668,466,677,374.40 = 769,273,628,621.05 : x - Step 2: Convert to fraction form
1,208,488,332,532.90/1,668,466,677,374.40 = 769,273,628,621.05/x - Step 3: Cross multiply
1,208,488,332,532.90x = 1,668,466,677,374.40 × 769,273,628,621.05 - Step 4: Simplify right side
1,208,488,332,532.90x = 1,283,507,415,137,111,517,429,760 - Step 5: Solve for x
x = 1,283,507,415,137,111,517,429,760/1,208,488,332,532.90 - Step 6: Final answer
x = 1,062,076,795,103.99
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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.