Finding the Fourth Proportional to 677,916.36, 935,506.78 and 371,991.80
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Solution
The fourth proportional to 677,916.36, 935,506.78 and 371,991.80 is: 513,338.92
Step by Step Solution
- Step 1: Write the proportion equation
677,916.36 : 935,506.78 = 371,991.80 : x - Step 2: Convert to fraction form
677,916.36/935,506.78 = 371,991.80/x - Step 3: Cross multiply
677,916.36x = 935,506.78 × 371,991.80 - Step 4: Simplify right side
677,916.36x = 348,000,851,004.40 - Step 5: Solve for x
x = 348,000,851,004.40/677,916.36 - Step 6: Final answer
x = 513,338.92
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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.