Finding the Fourth Proportional to 998,138.60, 1,377,435.03 and 630,778.99
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Solution
The fourth proportional to 998,138.60, 1,377,435.03 and 630,778.99 is: 870,477.38
Step by Step Solution
- Step 1: Write the proportion equation
998,138.60 : 1,377,435.03 = 630,778.99 : x - Step 2: Convert to fraction form
998,138.60/1,377,435.03 = 630,778.99/x - Step 3: Cross multiply
998,138.60x = 1,377,435.03 × 630,778.99 - Step 4: Simplify right side
998,138.60x = 868,857,077,014.02 - Step 5: Solve for x
x = 868,857,077,014.02/998,138.60 - Step 6: Final answer
x = 870,477.38
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1.5x scale
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.