Finding the Fourth Proportional to 418,980.74, 628,569.51 and 138,497.98
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Solution
The fourth proportional to 418,980.74, 628,569.51 and 138,497.98 is: 207,779.50
Step by Step Solution
- Step 1: Write the proportion equation
418,980.74 : 628,569.51 = 138,497.98 : x - Step 2: Convert to fraction form
418,980.74/628,569.51 = 138,497.98/x - Step 3: Cross multiply
418,980.74x = 628,569.51 × 138,497.98 - Step 4: Simplify right side
418,980.74x = 87,055,607,424.59 - Step 5: Solve for x
x = 87,055,607,424.59/418,980.74 - Step 6: Final answer
x = 207,779.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.