Finding the Fourth Proportional to 921,346.81, 1,271,441.33 and 513,439.68
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Solution
The fourth proportional to 921,346.81, 1,271,441.33 and 513,439.68 is: 708,537.13
Step by Step Solution
- Step 1: Write the proportion equation
921,346.81 : 1,271,441.33 = 513,439.68 : x - Step 2: Convert to fraction form
921,346.81/1,271,441.33 = 513,439.68/x - Step 3: Cross multiply
921,346.81x = 1,271,441.33 × 513,439.68 - Step 4: Simplify right side
921,346.81x = 652,808,420,689.57 - Step 5: Solve for x
x = 652,808,420,689.57/921,346.81 - Step 6: Final answer
x = 708,537.13
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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.