Finding the Fourth Proportional to 900,121.62, 1,242,128.30 and 513,020.84
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Solution
The fourth proportional to 900,121.62, 1,242,128.30 and 513,020.84 is: 707,946.22
Step by Step Solution
- Step 1: Write the proportion equation
900,121.62 : 1,242,128.30 = 513,020.84 : x - Step 2: Convert to fraction form
900,121.62/1,242,128.30 = 513,020.84/x - Step 3: Cross multiply
900,121.62x = 1,242,128.30 × 513,020.84 - Step 4: Simplify right side
900,121.62x = 637,237,695,078.03 - Step 5: Solve for x
x = 637,237,695,078.03/900,121.62 - Step 6: Final answer
x = 707,946.22
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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.