Finding the Fourth Proportional to 2,154,426.12, 2,973,128.04 and 1,187,590.95
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Solution
The fourth proportional to 2,154,426.12, 2,973,128.04 and 1,187,590.95 is: 1,638,886.53
Step by Step Solution
- Step 1: Write the proportion equation
2,154,426.12 : 2,973,128.04 = 1,187,590.95 : x - Step 2: Convert to fraction form
2,154,426.12/2,973,128.04 = 1,187,590.95/x - Step 3: Cross multiply
2,154,426.12x = 2,973,128.04 × 1,187,590.95 - Step 4: Simplify right side
2,154,426.12x = 3,530,859,953,495.24 - Step 5: Solve for x
x = 3,530,859,953,495.24/2,154,426.12 - Step 6: Final answer
x = 1,638,886.53
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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.