Finding the Fourth Proportional to 771,357.91, 1,064,120.70 and 499,513.35
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Solution
The fourth proportional to 771,357.91, 1,064,120.70 and 499,513.35 is: 689,099.69
Step by Step Solution
- Step 1: Write the proportion equation
771,357.91 : 1,064,120.70 = 499,513.35 : x - Step 2: Convert to fraction form
771,357.91/1,064,120.70 = 499,513.35/x - Step 3: Cross multiply
771,357.91x = 1,064,120.70 × 499,513.35 - Step 4: Simplify right side
771,357.91x = 531,542,495,661.35 - Step 5: Solve for x
x = 531,542,495,661.35/771,357.91 - Step 6: Final answer
x = 689,099.69
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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.