Finding the Fourth Proportional to 678,405,358.76, 936,310,461.74 and 565,195,320.08
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Solution
The fourth proportional to 678,405,358.76, 936,310,461.74 and 565,195,320.08 is: 780,062,073.93
Step by Step Solution
- Step 1: Write the proportion equation
678,405,358.76 : 936,310,461.74 = 565,195,320.08 : x - Step 2: Convert to fraction form
678,405,358.76/936,310,461.74 = 565,195,320.08/x - Step 3: Cross multiply
678,405,358.76x = 936,310,461.74 × 565,195,320.08 - Step 4: Simplify right side
678,405,358.76x = 529,198,291,117,391,936 - Step 5: Solve for x
x = 529,198,291,117,391,936/678,405,358.76 - Step 6: Final answer
x = 780,062,073.93
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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.