Finding the Fourth Proportional to 628,744,857.12, 938,696,440.68 and 480,416,131.08
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Solution
The fourth proportional to 628,744,857.12, 938,696,440.68 and 480,416,131.08 is: 717,246,283.90
Step by Step Solution
- Step 1: Write the proportion equation
628,744,857.12 : 938,696,440.68 = 480,416,131.08 : x - Step 2: Convert to fraction form
628,744,857.12/938,696,440.68 = 480,416,131.08/x - Step 3: Cross multiply
628,744,857.12x = 938,696,440.68 × 480,416,131.08 - Step 4: Simplify right side
628,744,857.12x = 450,964,912,290,052,288 - Step 5: Solve for x
x = 450,964,912,290,052,288/628,744,857.12 - Step 6: Final answer
x = 717,246,283.90
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.