Finding the Fourth Proportional to 786,681.09, 1,085,226.87 and 496,652.08
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Solution
The fourth proportional to 786,681.09, 1,085,226.87 and 496,652.08 is: 685,131.74
Step by Step Solution
- Step 1: Write the proportion equation
786,681.09 : 1,085,226.87 = 496,652.08 : x - Step 2: Convert to fraction form
786,681.09/1,085,226.87 = 496,652.08/x - Step 3: Cross multiply
786,681.09x = 1,085,226.87 × 496,652.08 - Step 4: Simplify right side
786,681.09x = 538,980,182,257.39 - Step 5: Solve for x
x = 538,980,182,257.39/786,681.09 - Step 6: Final answer
x = 685,131.74
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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.