Finding the Fourth Proportional to 813,240.84, 1,122,278.87 and 450,670.72
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Solution
The fourth proportional to 813,240.84, 1,122,278.87 and 450,670.72 is: 621,929.20
Step by Step Solution
- Step 1: Write the proportion equation
813,240.84 : 1,122,278.87 = 450,670.72 : x - Step 2: Convert to fraction form
813,240.84/1,122,278.87 = 450,670.72/x - Step 3: Cross multiply
813,240.84x = 1,122,278.87 × 450,670.72 - Step 4: Simplify right side
813,240.84x = 505,778,223,577.99 - Step 5: Solve for x
x = 505,778,223,577.99/813,240.84 - Step 6: Final answer
x = 621,929.20
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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.