Finding the Fourth Proportional to 1,388,559.69, 1,916,122.19 and 776,606.49
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Solution
The fourth proportional to 1,388,559.69, 1,916,122.19 and 776,606.49 is: 1,071,666.52
Step by Step Solution
- Step 1: Write the proportion equation
1,388,559.69 : 1,916,122.19 = 776,606.49 : x - Step 2: Convert to fraction form
1,388,559.69/1,916,122.19 = 776,606.49/x - Step 3: Cross multiply
1,388,559.69x = 1,916,122.19 × 776,606.49 - Step 4: Simplify right side
1,388,559.69x = 1,488,072,924,503.98 - Step 5: Solve for x
x = 1,488,072,924,503.98/1,388,559.69 - Step 6: Final answer
x = 1,071,666.52
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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.