Finding the Fourth Proportional to 813,332, 1,122,129.28 and 490,919.68
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Solution
The fourth proportional to 813,332, 1,122,129.28 and 490,919.68 is: 677,306.86
Step by Step Solution
- Step 1: Write the proportion equation
813,332 : 1,122,129.28 = 490,919.68 : x - Step 2: Convert to fraction form
813,332/1,122,129.28 = 490,919.68/x - Step 3: Cross multiply
813,332x = 1,122,129.28 × 490,919.68 - Step 4: Simplify right side
813,332x = 550,875,347,056.23 - Step 5: Solve for x
x = 550,875,347,056.23/813,332 - Step 6: Final answer
x = 677,306.86
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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.