Finding the Fourth Proportional to 1,219,046.21, 1,683,414.58 and 912,590.55
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Solution
The fourth proportional to 1,219,046.21, 1,683,414.58 and 912,590.55 is: 1,260,221.50
Step by Step Solution
- Step 1: Write the proportion equation
1,219,046.21 : 1,683,414.58 = 912,590.55 : x - Step 2: Convert to fraction form
1,219,046.21/1,683,414.58 = 912,590.55/x - Step 3: Cross multiply
1,219,046.21x = 1,683,414.58 × 912,590.55 - Step 4: Simplify right side
1,219,046.21x = 1,536,268,235,158.74 - Step 5: Solve for x
x = 1,536,268,235,158.74/1,219,046.21 - Step 6: Final answer
x = 1,260,221.50
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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.