Finding the Fourth Proportional to 7,128,630.84, 9,838,031.94 and 4,072,779.48
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Solution
The fourth proportional to 7,128,630.84, 9,838,031.94 and 4,072,779.48 is: 5,620,733.56
Step by Step Solution
- Step 1: Write the proportion equation
7,128,630.84 : 9,838,031.94 = 4,072,779.48 : x - Step 2: Convert to fraction form
7,128,630.84/9,838,031.94 = 4,072,779.48/x - Step 3: Cross multiply
7,128,630.84x = 9,838,031.94 × 4,072,779.48 - Step 4: Simplify right side
7,128,630.84x = 40,068,134,608,816.59 - Step 5: Solve for x
x = 40,068,134,608,816.59/7,128,630.84 - Step 6: Final answer
x = 5,620,733.56
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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.