Finding the Fourth Proportional to 5,135,572.13, 7,087,038.71 and 2,780,758.55
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Solution
The fourth proportional to 5,135,572.13, 7,087,038.71 and 2,780,758.55 is: 3,837,419.28
Step by Step Solution
- Step 1: Write the proportion equation
5,135,572.13 : 7,087,038.71 = 2,780,758.55 : x - Step 2: Convert to fraction form
5,135,572.13/7,087,038.71 = 2,780,758.55/x - Step 3: Cross multiply
5,135,572.13x = 7,087,038.71 × 2,780,758.55 - Step 4: Simplify right side
5,135,572.13x = 19,707,343,490,827.28 - Step 5: Solve for x
x = 19,707,343,490,827.28/5,135,572.13 - Step 6: Final answer
x = 3,837,419.28
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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.