Finding the Fourth Proportional to 826,248,161.70, 1,239,372,242.55 and 212,832,387.45
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Solution
The fourth proportional to 826,248,161.70, 1,239,372,242.55 and 212,832,387.45 is: 319,248,581.18
Step by Step Solution
- Step 1: Write the proportion equation
826,248,161.70 : 1,239,372,242.55 = 212,832,387.45 : x - Step 2: Convert to fraction form
826,248,161.70/1,239,372,242.55 = 212,832,387.45/x - Step 3: Cross multiply
826,248,161.70x = 1,239,372,242.55 × 212,832,387.45 - Step 4: Simplify right side
826,248,161.70x = 263,778,553,321,176,960 - Step 5: Solve for x
x = 263,778,553,321,176,960/826,248,161.70 - Step 6: Final answer
x = 319,248,581.18
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.