Finding the Fourth Proportional to 1,285,217.55, 1,771,386.44 and 854,728.47
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Solution
The fourth proportional to 1,285,217.55, 1,771,386.44 and 854,728.47 is: 1,178,053.02
Step by Step Solution
- Step 1: Write the proportion equation
1,285,217.55 : 1,771,386.44 = 854,728.47 : x - Step 2: Convert to fraction form
1,285,217.55/1,771,386.44 = 854,728.47/x - Step 3: Cross multiply
1,285,217.55x = 1,771,386.44 × 854,728.47 - Step 4: Simplify right side
1,285,217.55x = 1,514,054,417,366.30 - Step 5: Solve for x
x = 1,514,054,417,366.30/1,285,217.55 - Step 6: Final answer
x = 1,178,053.02
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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.