Finding the Fourth Proportional to 499,374,587.68, 689,135,932.56 and 279,358,013.68
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Solution
The fourth proportional to 499,374,587.68, 689,135,932.56 and 279,358,013.68 is: 385,513,500.34
Step by Step Solution
- Step 1: Write the proportion equation
499,374,587.68 : 689,135,932.56 = 279,358,013.68 : x - Step 2: Convert to fraction form
499,374,587.68/689,135,932.56 = 279,358,013.68/x - Step 3: Cross multiply
499,374,587.68x = 689,135,932.56 × 279,358,013.68 - Step 4: Simplify right side
499,374,587.68x = 192,515,645,275,476,032 - Step 5: Solve for x
x = 192,515,645,275,476,032/499,374,587.68 - Step 6: Final answer
x = 385,513,500.34
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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.