Finding the Fourth Proportional to 1,291,292, 1,781,898.72 and 718,311.68
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Solution
The fourth proportional to 1,291,292, 1,781,898.72 and 718,311.68 is: 991,223.26
Step by Step Solution
- Step 1: Write the proportion equation
1,291,292 : 1,781,898.72 = 718,311.68 : x - Step 2: Convert to fraction form
1,291,292/1,781,898.72 = 718,311.68/x - Step 3: Cross multiply
1,291,292x = 1,781,898.72 × 718,311.68 - Step 4: Simplify right side
1,291,292x = 1,279,958,663,153.05 - Step 5: Solve for x
x = 1,279,958,663,153.05/1,291,292 - Step 6: Final answer
x = 991,223.26
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.