Finding the Fourth Proportional to 636,917,947.08, 878,609,664 and 438,334,680.48
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Solution
The fourth proportional to 636,917,947.08, 878,609,664 and 438,334,680.48 is: 604,669,860.70
Step by Step Solution
- Step 1: Write the proportion equation
636,917,947.08 : 878,609,664 = 438,334,680.48 : x - Step 2: Convert to fraction form
636,917,947.08/878,609,664 = 438,334,680.48/x - Step 3: Cross multiply
636,917,947.08x = 878,609,664 × 438,334,680.48 - Step 4: Simplify right side
636,917,947.08x = 385,125,086,336,080,192 - Step 5: Solve for x
x = 385,125,086,336,080,192/636,917,947.08 - Step 6: Final answer
x = 604,669,860.70
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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.