Finding the Fourth Proportional to 7,030,031.68, 9,701,767.20 and 3,974,374.72
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Solution
The fourth proportional to 7,030,031.68, 9,701,767.20 and 3,974,374.72 is: 5,484,819.99
Step by Step Solution
- Step 1: Write the proportion equation
7,030,031.68 : 9,701,767.20 = 3,974,374.72 : x - Step 2: Convert to fraction form
7,030,031.68/9,701,767.20 = 3,974,374.72/x - Step 3: Cross multiply
7,030,031.68x = 9,701,767.20 × 3,974,374.72 - Step 4: Simplify right side
7,030,031.68x = 38,558,458,299,005.18 - Step 5: Solve for x
x = 38,558,458,299,005.18/7,030,031.68 - Step 6: Final answer
x = 5,484,819.99
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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.