Finding the Fourth Proportional to 1,309,844,901.02, 1,807,576,604.70 and 715,129,365.92
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Solution
The fourth proportional to 1,309,844,901.02, 1,807,576,604.70 and 715,129,365.92 is: 986,873,415.44
Step by Step Solution
- Step 1: Write the proportion equation
1,309,844,901.02 : 1,807,576,604.70 = 715,129,365.92 : x - Step 2: Convert to fraction form
1,309,844,901.02/1,807,576,604.70 = 715,129,365.92/x - Step 3: Cross multiply
1,309,844,901.02x = 1,807,576,604.70 × 715,129,365.92 - Step 4: Simplify right side
1,309,844,901.02x = 1,292,651,111,170,937,344 - Step 5: Solve for x
x = 1,292,651,111,170,937,344/1,309,844,901.02 - Step 6: Final answer
x = 986,873,415.44
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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.