Finding the Fourth Proportional to 1,398,199,976.25, 1,929,488,616.87 and 763,125,020.46
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Solution
The fourth proportional to 1,398,199,976.25, 1,929,488,616.87 and 763,125,020.46 is: 1,053,097,600.66
Step by Step Solution
- Step 1: Write the proportion equation
1,398,199,976.25 : 1,929,488,616.87 = 763,125,020.46 : x - Step 2: Convert to fraction form
1,398,199,976.25/1,929,488,616.87 = 763,125,020.46/x - Step 3: Cross multiply
1,398,199,976.25x = 1,929,488,616.87 × 763,125,020.46 - Step 4: Simplify right side
1,398,199,976.25x = 1,472,441,040,226,255,872 - Step 5: Solve for x
x = 1,472,441,040,226,255,872/1,398,199,976.25 - Step 6: Final answer
x = 1,053,097,600.66
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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.