Finding the Fourth Proportional to 3,730,899.78, 5,587,381.42 and 2,128,605.17
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Solution
The fourth proportional to 3,730,899.78, 5,587,381.42 and 2,128,605.17 is: 3,187,791.05
Step by Step Solution
- Step 1: Write the proportion equation
3,730,899.78 : 5,587,381.42 = 2,128,605.17 : x - Step 2: Convert to fraction form
3,730,899.78/5,587,381.42 = 2,128,605.17/x - Step 3: Cross multiply
3,730,899.78x = 5,587,381.42 × 2,128,605.17 - Step 4: Simplify right side
3,730,899.78x = 11,893,328,944,115.52 - Step 5: Solve for x
x = 11,893,328,944,115.52/3,730,899.78 - Step 6: Final answer
x = 3,187,791.05
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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.