Finding the Fourth Proportional to 704,928,942.12, 972,828,193.86 and 422,717,329.74
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Solution
The fourth proportional to 704,928,942.12, 972,828,193.86 and 422,717,329.74 is: 583,365,658.34
Step by Step Solution
- Step 1: Write the proportion equation
704,928,942.12 : 972,828,193.86 = 422,717,329.74 : x - Step 2: Convert to fraction form
704,928,942.12/972,828,193.86 = 422,717,329.74/x - Step 3: Cross multiply
704,928,942.12x = 972,828,193.86 × 422,717,329.74 - Step 4: Simplify right side
704,928,942.12x = 411,231,336,404,286,272 - Step 5: Solve for x
x = 411,231,336,404,286,272/704,928,942.12 - Step 6: Final answer
x = 583,365,658.34
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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.