Finding the Fourth Proportional to 1,328,742.18, 1,833,663.71 and 725,130.18
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Solution
The fourth proportional to 1,328,742.18, 1,833,663.71 and 725,130.18 is: 1,000,679.38
Step by Step Solution
- Step 1: Write the proportion equation
1,328,742.18 : 1,833,663.71 = 725,130.18 : x - Step 2: Convert to fraction form
1,328,742.18/1,833,663.71 = 725,130.18/x - Step 3: Cross multiply
1,328,742.18x = 1,833,663.71 × 725,130.18 - Step 4: Simplify right side
1,328,742.18x = 1,329,644,896,091.77 - Step 5: Solve for x
x = 1,329,644,896,091.77/1,328,742.18 - Step 6: Final answer
x = 1,000,679.38
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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.