Finding the Fourth Proportional to 715,430.40, 987,273.36 and 405,304.08
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Solution
The fourth proportional to 715,430.40, 987,273.36 and 405,304.08 is: 559,307.96
Step by Step Solution
- Step 1: Write the proportion equation
715,430.40 : 987,273.36 = 405,304.08 : x - Step 2: Convert to fraction form
715,430.40/987,273.36 = 405,304.08/x - Step 3: Cross multiply
715,430.40x = 987,273.36 × 405,304.08 - Step 4: Simplify right side
715,430.40x = 400,145,920,883.31 - Step 5: Solve for x
x = 400,145,920,883.31/715,430.40 - Step 6: Final answer
x = 559,307.96
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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.