Finding the Fourth Proportional to 1,328,665,159.80, 1,992,997,739.70 and 346,089,799.80
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Solution
The fourth proportional to 1,328,665,159.80, 1,992,997,739.70 and 346,089,799.80 is: 519,134,699.70
Step by Step Solution
- Step 1: Write the proportion equation
1,328,665,159.80 : 1,992,997,739.70 = 346,089,799.80 : x - Step 2: Convert to fraction form
1,328,665,159.80/1,992,997,739.70 = 346,089,799.80/x - Step 3: Cross multiply
1,328,665,159.80x = 1,992,997,739.70 × 346,089,799.80 - Step 4: Simplify right side
1,328,665,159.80x = 689,756,188,734,625,536 - Step 5: Solve for x
x = 689,756,188,734,625,536/1,328,665,159.80 - Step 6: Final answer
x = 519,134,699.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.