Finding the Fourth Proportional to 1,051,962.10, 1,451,365.84 and 643,638.26
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Solution
The fourth proportional to 1,051,962.10, 1,451,365.84 and 643,638.26 is: 888,011.63
Step by Step Solution
- Step 1: Write the proportion equation
1,051,962.10 : 1,451,365.84 = 643,638.26 : x - Step 2: Convert to fraction form
1,051,962.10/1,451,365.84 = 643,638.26/x - Step 3: Cross multiply
1,051,962.10x = 1,451,365.84 × 643,638.26 - Step 4: Simplify right side
1,051,962.10x = 934,154,583,881.04 - Step 5: Solve for x
x = 934,154,583,881.04/1,051,962.10 - Step 6: Final answer
x = 888,011.63
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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.