Finding the Fourth Proportional to 689,608,898.78, 951,680,456.08 and 376,363,203.98
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Solution
The fourth proportional to 689,608,898.78, 951,680,456.08 and 376,363,203.98 is: 519,392,232.68
Step by Step Solution
- Step 1: Write the proportion equation
689,608,898.78 : 951,680,456.08 = 376,363,203.98 : x - Step 2: Convert to fraction form
689,608,898.78/951,680,456.08 = 376,363,203.98/x - Step 3: Cross multiply
689,608,898.78x = 951,680,456.08 × 376,363,203.98 - Step 4: Simplify right side
689,608,898.78x = 358,177,505,615,416,512 - Step 5: Solve for x
x = 358,177,505,615,416,512/689,608,898.78 - Step 6: Final answer
x = 519,392,232.68
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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.