Finding the Fourth Proportional to 5,157,576,839.80, 7,117,387,955.60 and 2,868,693,614.20
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Solution
The fourth proportional to 5,157,576,839.80, 7,117,387,955.60 and 2,868,693,614.20 is: 3,958,759,319.00
Step by Step Solution
- Step 1: Write the proportion equation
5,157,576,839.80 : 7,117,387,955.60 = 2,868,693,614.20 : x - Step 2: Convert to fraction form
5,157,576,839.80/7,117,387,955.60 = 2,868,693,614.20/x - Step 3: Cross multiply
5,157,576,839.80x = 7,117,387,955.60 × 2,868,693,614.20 - Step 4: Simplify right side
5,157,576,839.80x = 20,417,605,378,013,712,384 - Step 5: Solve for x
x = 20,417,605,378,013,712,384/5,157,576,839.80 - Step 6: Final answer
x = 3,958,759,319.00
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1.5x scale
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.