Finding the Fourth Proportional to 1,331,235,784.10, 1,992,968,164.38 and 776,839,332.26
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Solution
The fourth proportional to 1,331,235,784.10, 1,992,968,164.38 and 776,839,332.26 is: 1,162,991,617.66
Step by Step Solution
- Step 1: Write the proportion equation
1,331,235,784.10 : 1,992,968,164.38 = 776,839,332.26 : x - Step 2: Convert to fraction form
1,331,235,784.10/1,992,968,164.38 = 776,839,332.26/x - Step 3: Cross multiply
1,331,235,784.10x = 1,992,968,164.38 × 776,839,332.26 - Step 4: Simplify right side
1,331,235,784.10x = 1,548,216,058,032,397,312 - Step 5: Solve for x
x = 1,548,216,058,032,397,312/1,331,235,784.10 - Step 6: Final answer
x = 1,162,991,617.66
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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.