Finding the Fourth Proportional to 660,690,474.26, 911,494,805.02 and 378,281,985.17
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Solution
The fourth proportional to 660,690,474.26, 911,494,805.02 and 378,281,985.17 is: 521,881,391.89
Step by Step Solution
- Step 1: Write the proportion equation
660,690,474.26 : 911,494,805.02 = 378,281,985.17 : x - Step 2: Convert to fraction form
660,690,474.26/911,494,805.02 = 378,281,985.17/x - Step 3: Cross multiply
660,690,474.26x = 911,494,805.02 × 378,281,985.17 - Step 4: Simplify right side
660,690,474.26x = 344,802,064,309,604,544 - Step 5: Solve for x
x = 344,802,064,309,604,544/660,690,474.26 - Step 6: Final answer
x = 521,881,391.89
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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.