Finding the Fourth Proportional to 638,642,467.62, 881,326,780.97 and 352,534,167.80
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Solution
The fourth proportional to 638,642,467.62, 881,326,780.97 and 352,534,167.80 is: 486,497,248.53
Step by Step Solution
- Step 1: Write the proportion equation
638,642,467.62 : 881,326,780.97 = 352,534,167.80 : x - Step 2: Convert to fraction form
638,642,467.62/881,326,780.97 = 352,534,167.80/x - Step 3: Cross multiply
638,642,467.62x = 881,326,780.97 × 352,534,167.80 - Step 4: Simplify right side
638,642,467.62x = 310,697,803,289,693,440 - Step 5: Solve for x
x = 310,697,803,289,693,440/638,642,467.62 - Step 6: Final answer
x = 486,497,248.53
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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.