Finding the Fourth Proportional to 331,128,603.60, 496,692,905.40 and 324,326,158.80
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Solution
The fourth proportional to 331,128,603.60, 496,692,905.40 and 324,326,158.80 is: 486,489,238.20
Step by Step Solution
- Step 1: Write the proportion equation
331,128,603.60 : 496,692,905.40 = 324,326,158.80 : x - Step 2: Convert to fraction form
331,128,603.60/496,692,905.40 = 324,326,158.80/x - Step 3: Cross multiply
331,128,603.60x = 496,692,905.40 × 324,326,158.80 - Step 4: Simplify right side
331,128,603.60x = 161,090,502,111,593,760 - Step 5: Solve for x
x = 161,090,502,111,593,760/331,128,603.60 - Step 6: Final answer
x = 486,489,238.20
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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.