Finding the Fourth Proportional to 1,230,972.05, 1,699,024.86 and 721,838.45
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Solution
The fourth proportional to 1,230,972.05, 1,699,024.86 and 721,838.45 is: 996,303.26
Step by Step Solution
- Step 1: Write the proportion equation
1,230,972.05 : 1,699,024.86 = 721,838.45 : x - Step 2: Convert to fraction form
1,230,972.05/1,699,024.86 = 721,838.45/x - Step 3: Cross multiply
1,230,972.05x = 1,699,024.86 × 721,838.45 - Step 4: Simplify right side
1,230,972.05x = 1,226,421,471,453.87 - Step 5: Solve for x
x = 1,226,421,471,453.87/1,230,972.05 - Step 6: Final answer
x = 996,303.26
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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.