Finding the Fourth Proportional to 664,587.13, 917,118.50 and 378,101.07
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Solution
The fourth proportional to 664,587.13, 917,118.50 and 378,101.07 is: 521,772.80
Step by Step Solution
- Step 1: Write the proportion equation
664,587.13 : 917,118.50 = 378,101.07 : x - Step 2: Convert to fraction form
664,587.13/917,118.50 = 378,101.07/x - Step 3: Cross multiply
664,587.13x = 917,118.50 × 378,101.07 - Step 4: Simplify right side
664,587.13x = 346,763,486,166.80 - Step 5: Solve for x
x = 346,763,486,166.80/664,587.13 - Step 6: Final answer
x = 521,772.80
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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.