Finding the Fourth Proportional to 7,480,638.12, 10,318,493.70 and 5,187,962.28
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Solution
The fourth proportional to 7,480,638.12, 10,318,493.70 and 5,187,962.28 is: 7,156,068.14
Step by Step Solution
- Step 1: Write the proportion equation
7,480,638.12 : 10,318,493.70 = 5,187,962.28 : x - Step 2: Convert to fraction form
7,480,638.12/10,318,493.70 = 5,187,962.28/x - Step 3: Cross multiply
7,480,638.12x = 10,318,493.70 × 5,187,962.28 - Step 4: Simplify right side
7,480,638.12x = 53,531,956,102,017.63 - Step 5: Solve for x
x = 53,531,956,102,017.63/7,480,638.12 - Step 6: Final answer
x = 7,156,068.14
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1.5x scale
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.