Finding the Fourth Proportional to 1,354,313.81, 1,868,912.55 and 742,445.65
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Solution
The fourth proportional to 1,354,313.81, 1,868,912.55 and 742,445.65 is: 1,024,552.79
Step by Step Solution
- Step 1: Write the proportion equation
1,354,313.81 : 1,868,912.55 = 742,445.65 : x - Step 2: Convert to fraction form
1,354,313.81/1,868,912.55 = 742,445.65/x - Step 3: Cross multiply
1,354,313.81x = 1,868,912.55 × 742,445.65 - Step 4: Simplify right side
1,354,313.81x = 1,387,565,992,977.91 - Step 5: Solve for x
x = 1,387,565,992,977.91/1,354,313.81 - Step 6: Final answer
x = 1,024,552.79
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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.