Finding the Fourth Proportional to 1,063,755,866.62, 1,468,374,821.91 and 640,389,206.02
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Solution
The fourth proportional to 1,063,755,866.62, 1,468,374,821.91 and 640,389,206.02 is: 883,972,926.35
Step by Step Solution
- Step 1: Write the proportion equation
1,063,755,866.62 : 1,468,374,821.91 = 640,389,206.02 : x - Step 2: Convert to fraction form
1,063,755,866.62/1,468,374,821.91 = 640,389,206.02/x - Step 3: Cross multiply
1,063,755,866.62x = 1,468,374,821.91 × 640,389,206.02 - Step 4: Simplify right side
1,063,755,866.62x = 940,331,386,342,703,872 - Step 5: Solve for x
x = 940,331,386,342,703,872/1,063,755,866.62 - Step 6: Final answer
x = 883,972,926.35
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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.