Finding the Fourth Proportional to 1,289,313.54, 1,779,220.71 and 716,355.09
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Solution
The fourth proportional to 1,289,313.54, 1,779,220.71 and 716,355.09 is: 988,552.26
Step by Step Solution
- Step 1: Write the proportion equation
1,289,313.54 : 1,779,220.71 = 716,355.09 : x - Step 2: Convert to fraction form
1,289,313.54/1,779,220.71 = 716,355.09/x - Step 3: Cross multiply
1,289,313.54x = 1,779,220.71 × 716,355.09 - Step 4: Simplify right side
1,289,313.54x = 1,274,553,811,841.91 - Step 5: Solve for x
x = 1,274,553,811,841.91/1,289,313.54 - Step 6: Final answer
x = 988,552.26
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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.