Finding the Fourth Proportional to 1,388,318.38, 1,915,873.74 and 776,468.68
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Solution
The fourth proportional to 1,388,318.38, 1,915,873.74 and 776,468.68 is: 1,071,523.63
Step by Step Solution
- Step 1: Write the proportion equation
1,388,318.38 : 1,915,873.74 = 776,468.68 : x - Step 2: Convert to fraction form
1,388,318.38/1,915,873.74 = 776,468.68/x - Step 3: Cross multiply
1,388,318.38x = 1,915,873.74 × 776,468.68 - Step 4: Simplify right side
1,388,318.38x = 1,487,615,953,944.46 - Step 5: Solve for x
x = 1,487,615,953,944.46/1,388,318.38 - Step 6: Final answer
x = 1,071,523.63
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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.