Finding the Fourth Proportional to 771,489.84, 1,064,425.68 and 499,126.44
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Solution
The fourth proportional to 771,489.84, 1,064,425.68 and 499,126.44 is: 688,645.49
Step by Step Solution
- Step 1: Write the proportion equation
771,489.84 : 1,064,425.68 = 499,126.44 : x - Step 2: Convert to fraction form
771,489.84/1,064,425.68 = 499,126.44/x - Step 3: Cross multiply
771,489.84x = 1,064,425.68 × 499,126.44 - Step 4: Simplify right side
771,489.84x = 531,283,000,302.98 - Step 5: Solve for x
x = 531,283,000,302.98/771,489.84 - Step 6: Final answer
x = 688,645.49
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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.