Finding the Fourth Proportional to 715,828.15, 987,848.51 and 389,141.09
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Solution
The fourth proportional to 715,828.15, 987,848.51 and 389,141.09 is: 537,017.79
Step by Step Solution
- Step 1: Write the proportion equation
715,828.15 : 987,848.51 = 389,141.09 : x - Step 2: Convert to fraction form
715,828.15/987,848.51 = 389,141.09/x - Step 3: Cross multiply
715,828.15x = 987,848.51 × 389,141.09 - Step 4: Simplify right side
715,828.15x = 384,412,446,460.19 - Step 5: Solve for x
x = 384,412,446,460.19/715,828.15 - Step 6: Final answer
x = 537,017.79
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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.