Finding the Fourth Proportional to 1,316,187.80, 1,816,172.18 and 772,125.08
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Solution
The fourth proportional to 1,316,187.80, 1,816,172.18 and 772,125.08 is: 1,065,434.65
Step by Step Solution
- Step 1: Write the proportion equation
1,316,187.80 : 1,816,172.18 = 772,125.08 : x - Step 2: Convert to fraction form
1,316,187.80/1,816,172.18 = 772,125.08/x - Step 3: Cross multiply
1,316,187.80x = 1,816,172.18 × 772,125.08 - Step 4: Simplify right side
1,316,187.80x = 1,402,312,089,776.27 - Step 5: Solve for x
x = 1,402,312,089,776.27/1,316,187.80 - Step 6: Final answer
x = 1,065,434.65
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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.