Finding the Fourth Proportional to 664,602.84, 917,029.26 and 378,106.20
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Solution
The fourth proportional to 664,602.84, 917,029.26 and 378,106.20 is: 521,716.77
Step by Step Solution
- Step 1: Write the proportion equation
664,602.84 : 917,029.26 = 378,106.20 : x - Step 2: Convert to fraction form
664,602.84/917,029.26 = 378,106.20/x - Step 3: Cross multiply
664,602.84x = 917,029.26 × 378,106.20 - Step 4: Simplify right side
664,602.84x = 346,734,448,787.41 - Step 5: Solve for x
x = 346,734,448,787.41/664,602.84 - Step 6: Final answer
x = 521,716.77
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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.