Finding the Fourth Proportional to 788,228.18, 1,087,931.94 and 516,138.05
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Solution
The fourth proportional to 788,228.18, 1,087,931.94 and 516,138.05 is: 712,386.44
Step by Step Solution
- Step 1: Write the proportion equation
788,228.18 : 1,087,931.94 = 516,138.05 : x - Step 2: Convert to fraction form
788,228.18/1,087,931.94 = 516,138.05/x - Step 3: Cross multiply
788,228.18x = 1,087,931.94 × 516,138.05 - Step 4: Simplify right side
788,228.18x = 561,523,070,044.32 - Step 5: Solve for x
x = 561,523,070,044.32/788,228.18 - Step 6: Final answer
x = 712,386.44
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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.