Finding the Fourth Proportional to 1,221,330.14, 1,685,462.61 and 677,448.21
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Solution
The fourth proportional to 1,221,330.14, 1,685,462.61 and 677,448.21 is: 934,893.52
Step by Step Solution
- Step 1: Write the proportion equation
1,221,330.14 : 1,685,462.61 = 677,448.21 : x - Step 2: Convert to fraction form
1,221,330.14/1,685,462.61 = 677,448.21/x - Step 3: Cross multiply
1,221,330.14x = 1,685,462.61 × 677,448.21 - Step 4: Simplify right side
1,221,330.14x = 1,141,813,624,779.19 - Step 5: Solve for x
x = 1,141,813,624,779.19/1,221,330.14 - Step 6: Final answer
x = 934,893.52
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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.