Finding the Fourth Proportional to 708,403.70, 977,588.48 and 386,112.80
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Solution
The fourth proportional to 708,403.70, 977,588.48 and 386,112.80 is: 532,830.96
Step by Step Solution
- Step 1: Write the proportion equation
708,403.70 : 977,588.48 = 386,112.80 : x - Step 2: Convert to fraction form
708,403.70/977,588.48 = 386,112.80/x - Step 3: Cross multiply
708,403.70x = 977,588.48 × 386,112.80 - Step 4: Simplify right side
708,403.70x = 377,459,425,260.54 - Step 5: Solve for x
x = 377,459,425,260.54/708,403.70 - Step 6: Final answer
x = 532,830.96
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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.