Finding the Fourth Proportional to 991,246,353.25, 1,487,038,923.96 and 408,662,128.62
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Solution
The fourth proportional to 991,246,353.25, 1,487,038,923.96 and 408,662,128.62 is: 613,063,029.19
Step by Step Solution
- Step 1: Write the proportion equation
991,246,353.25 : 1,487,038,923.96 = 408,662,128.62 : x - Step 2: Convert to fraction form
991,246,353.25/1,487,038,923.96 = 408,662,128.62/x - Step 3: Cross multiply
991,246,353.25x = 1,487,038,923.96 × 408,662,128.62 - Step 4: Simplify right side
991,246,353.25x = 607,696,491,998,852,736 - Step 5: Solve for x
x = 607,696,491,998,852,736/991,246,353.25 - Step 6: Final answer
x = 613,063,029.19
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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.