Finding the Fourth Proportional to 947,706.79, 1,307,816.08 and 517,990
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Solution
The fourth proportional to 947,706.79, 1,307,816.08 and 517,990 is: 714,815.66
Step by Step Solution
- Step 1: Write the proportion equation
947,706.79 : 1,307,816.08 = 517,990 : x - Step 2: Convert to fraction form
947,706.79/1,307,816.08 = 517,990/x - Step 3: Cross multiply
947,706.79x = 1,307,816.08 × 517,990 - Step 4: Simplify right side
947,706.79x = 677,435,651,279.20 - Step 5: Solve for x
x = 677,435,651,279.20/947,706.79 - Step 6: Final answer
x = 714,815.66
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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.