Finding the Fourth Proportional to 7,235,828.84, 9,985,724.62 and 3,972,781.10
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Solution
The fourth proportional to 7,235,828.84, 9,985,724.62 and 3,972,781.10 is: 5,482,592.10
Step by Step Solution
- Step 1: Write the proportion equation
7,235,828.84 : 9,985,724.62 = 3,972,781.10 : x - Step 2: Convert to fraction form
7,235,828.84/9,985,724.62 = 3,972,781.10/x - Step 3: Cross multiply
7,235,828.84x = 9,985,724.62 × 3,972,781.10 - Step 4: Simplify right side
7,235,828.84x = 39,671,098,040,140.68 - Step 5: Solve for x
x = 39,671,098,040,140.68/7,235,828.84 - Step 6: Final answer
x = 5,482,592.10
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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.