Finding the Fourth Proportional to 721,752,516.24, 996,028,027.56 and 391,731,611.28
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Solution
The fourth proportional to 721,752,516.24, 996,028,027.56 and 391,731,611.28 is: 540,594,809.63
Step by Step Solution
- Step 1: Write the proportion equation
721,752,516.24 : 996,028,027.56 = 391,731,611.28 : x - Step 2: Convert to fraction form
721,752,516.24/996,028,027.56 = 391,731,611.28/x - Step 3: Cross multiply
721,752,516.24x = 996,028,027.56 × 391,731,611.28 - Step 4: Simplify right side
721,752,516.24x = 390,175,664,116,118,976 - Step 5: Solve for x
x = 390,175,664,116,118,976/721,752,516.24 - Step 6: Final answer
x = 540,594,809.63
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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.