Finding the Fourth Proportional to 458,902,412.05, 688,352,757.80 and 143,792,565.62
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Solution
The fourth proportional to 458,902,412.05, 688,352,757.80 and 143,792,565.62 is: 215,688,578.86
Step by Step Solution
- Step 1: Write the proportion equation
458,902,412.05 : 688,352,757.80 = 143,792,565.62 : x - Step 2: Convert to fraction form
458,902,412.05/688,352,757.80 = 143,792,565.62/x - Step 3: Cross multiply
458,902,412.05x = 688,352,757.80 × 143,792,565.62 - Step 4: Simplify right side
458,902,412.05x = 98,980,009,091,503,744 - Step 5: Solve for x
x = 98,980,009,091,503,744/458,902,412.05 - Step 6: Final answer
x = 215,688,578.86
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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.