Finding the Fourth Proportional to 1,287,838.08, 1,931,319.72 and 446,193.36
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Solution
The fourth proportional to 1,287,838.08, 1,931,319.72 and 446,193.36 is: 669,138.50
Step by Step Solution
- Step 1: Write the proportion equation
1,287,838.08 : 1,931,319.72 = 446,193.36 : x - Step 2: Convert to fraction form
1,287,838.08/1,931,319.72 = 446,193.36/x - Step 3: Cross multiply
1,287,838.08x = 1,931,319.72 × 446,193.36 - Step 4: Simplify right side
1,287,838.08x = 861,742,035,101.06 - Step 5: Solve for x
x = 861,742,035,101.06/1,287,838.08 - Step 6: Final answer
x = 669,138.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.