Finding the Fourth Proportional to 939,811.62, 1,296,926.06 and 531,990.80
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Solution
The fourth proportional to 939,811.62, 1,296,926.06 and 531,990.80 is: 734,139.38
Step by Step Solution
- Step 1: Write the proportion equation
939,811.62 : 1,296,926.06 = 531,990.80 : x - Step 2: Convert to fraction form
939,811.62/1,296,926.06 = 531,990.80/x - Step 3: Cross multiply
939,811.62x = 1,296,926.06 × 531,990.80 - Step 4: Simplify right side
939,811.62x = 689,952,723,055.66 - Step 5: Solve for x
x = 689,952,723,055.66/939,811.62 - Step 6: Final answer
x = 734,139.38
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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.