Finding the Fourth Proportional to 396,933,616.14, 547,768,844.42 and 220,717,828.10
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Solution
The fourth proportional to 396,933,616.14, 547,768,844.42 and 220,717,828.10 is: 304,590,855.30
Step by Step Solution
- Step 1: Write the proportion equation
396,933,616.14 : 547,768,844.42 = 220,717,828.10 : x - Step 2: Convert to fraction form
396,933,616.14/547,768,844.42 = 220,717,828.10/x - Step 3: Cross multiply
396,933,616.14x = 547,768,844.42 × 220,717,828.10 - Step 4: Simplify right side
396,933,616.14x = 120,902,349,637,386,768 - Step 5: Solve for x
x = 120,902,349,637,386,768/396,933,616.14 - Step 6: Final answer
x = 304,590,855.30
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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.