Finding the Fourth Proportional to 1,385,472.29, 1,913,272.23 and 1,309,992.09
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Solution
The fourth proportional to 1,385,472.29, 1,913,272.23 and 1,309,992.09 is: 1,809,037.62
Step by Step Solution
- Step 1: Write the proportion equation
1,385,472.29 : 1,913,272.23 = 1,309,992.09 : x - Step 2: Convert to fraction form
1,385,472.29/1,913,272.23 = 1,309,992.09/x - Step 3: Cross multiply
1,385,472.29x = 1,913,272.23 × 1,309,992.09 - Step 4: Simplify right side
1,385,472.29x = 2,506,371,487,316.66 - Step 5: Solve for x
x = 2,506,371,487,316.66/1,385,472.29 - Step 6: Final answer
x = 1,809,037.62
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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.