Finding the Fourth Proportional to 771,649.84, 1,064,522.94 and 499,805.12
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Solution
The fourth proportional to 771,649.84, 1,064,522.94 and 499,805.12 is: 689,501.88
Step by Step Solution
- Step 1: Write the proportion equation
771,649.84 : 1,064,522.94 = 499,805.12 : x - Step 2: Convert to fraction form
771,649.84/1,064,522.94 = 499,805.12/x - Step 3: Cross multiply
771,649.84x = 1,064,522.94 × 499,805.12 - Step 4: Simplify right side
771,649.84x = 532,054,015,769.45 - Step 5: Solve for x
x = 532,054,015,769.45/771,649.84 - Step 6: Final answer
x = 689,501.88
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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.