Finding the Fourth Proportional to 1,547,721.08, 2,135,855.12 and 868,657.60
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Solution
The fourth proportional to 1,547,721.08, 2,135,855.12 and 868,657.60 is: 1,198,747.50
Step by Step Solution
- Step 1: Write the proportion equation
1,547,721.08 : 2,135,855.12 = 868,657.60 : x - Step 2: Convert to fraction form
1,547,721.08/2,135,855.12 = 868,657.60/x - Step 3: Cross multiply
1,547,721.08x = 2,135,855.12 × 868,657.60 - Step 4: Simplify right side
1,547,721.08x = 1,855,326,782,486.91 - Step 5: Solve for x
x = 1,855,326,782,486.91/1,547,721.08 - Step 6: Final answer
x = 1,198,747.50
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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.