Finding the Fourth Proportional to 1,187,590.28, 1,781,370.36 and 289,033.99
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Solution
The fourth proportional to 1,187,590.28, 1,781,370.36 and 289,033.99 is: 433,547.32
Step by Step Solution
- Step 1: Write the proportion equation
1,187,590.28 : 1,781,370.36 = 289,033.99 : x - Step 2: Convert to fraction form
1,187,590.28/1,781,370.36 = 289,033.99/x - Step 3: Cross multiply
1,187,590.28x = 1,781,370.36 × 289,033.99 - Step 4: Simplify right side
1,187,590.28x = 514,876,578,365.11 - Step 5: Solve for x
x = 514,876,578,365.11/1,187,590.28 - Step 6: Final answer
x = 433,547.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.