Finding the Fourth Proportional to 2,119,455.09, 2,924,925.12 and 1,214,212.05
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Solution
The fourth proportional to 2,119,455.09, 2,924,925.12 and 1,214,212.05 is: 1,675,656.80
Step by Step Solution
- Step 1: Write the proportion equation
2,119,455.09 : 2,924,925.12 = 1,214,212.05 : x - Step 2: Convert to fraction form
2,119,455.09/2,924,925.12 = 1,214,212.05/x - Step 3: Cross multiply
2,119,455.09x = 2,924,925.12 × 1,214,212.05 - Step 4: Simplify right side
2,119,455.09x = 3,551,479,326,051.70 - Step 5: Solve for x
x = 3,551,479,326,051.70/2,119,455.09 - Step 6: Final answer
x = 1,675,656.80
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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.