Finding the Fourth Proportional to 771,509.13, 1,064,436.55 and 499,785.31
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Solution
The fourth proportional to 771,509.13, 1,064,436.55 and 499,785.31 is: 689,544.34
Step by Step Solution
- Step 1: Write the proportion equation
771,509.13 : 1,064,436.55 = 499,785.31 : x - Step 2: Convert to fraction form
771,509.13/1,064,436.55 = 499,785.31/x - Step 3: Cross multiply
771,509.13x = 1,064,436.55 × 499,785.31 - Step 4: Simplify right side
771,509.13x = 531,989,751,117.08 - Step 5: Solve for x
x = 531,989,751,117.08/771,509.13 - Step 6: Final answer
x = 689,544.34
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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.