Finding the Fourth Proportional to 1,129,113,659.79, 1,693,088,955.44 and 506,795,393.82
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Solution
The fourth proportional to 1,129,113,659.79, 1,693,088,955.44 and 506,795,393.82 is: 759,932,072.82
Step by Step Solution
- Step 1: Write the proportion equation
1,129,113,659.79 : 1,693,088,955.44 = 506,795,393.82 : x - Step 2: Convert to fraction form
1,129,113,659.79/1,693,088,955.44 = 506,795,393.82/x - Step 3: Cross multiply
1,129,113,659.79x = 1,693,088,955.44 × 506,795,393.82 - Step 4: Simplify right side
1,129,113,659.79x = 858,049,683,933,507,840 - Step 5: Solve for x
x = 858,049,683,933,507,840/1,129,113,659.79 - Step 6: Final answer
x = 759,932,072.82
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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.