Finding the Fourth Proportional to 7,965,963,393.80, 11,948,945,090.70 and 4,292,643,201.80
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Solution
The fourth proportional to 7,965,963,393.80, 11,948,945,090.70 and 4,292,643,201.80 is: 6,438,964,802.70
Step by Step Solution
- Step 1: Write the proportion equation
7,965,963,393.80 : 11,948,945,090.70 = 4,292,643,201.80 : x - Step 2: Convert to fraction form
7,965,963,393.80/11,948,945,090.70 = 4,292,643,201.80/x - Step 3: Cross multiply
7,965,963,393.80x = 11,948,945,090.70 × 4,292,643,201.80 - Step 4: Simplify right side
7,965,963,393.80x = 51,292,557,912,274,845,696 - Step 5: Solve for x
x = 51,292,557,912,274,845,696/7,965,963,393.80 - Step 6: Final answer
x = 6,438,964,802.70
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Double scale
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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.