Finding the Fourth Proportional to 665,416,415.56, 918,213,029.22 and 368,052,257.62
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Solution
The fourth proportional to 665,416,415.56, 918,213,029.22 and 368,052,257.62 is: 507,878,030.17
Step by Step Solution
- Step 1: Write the proportion equation
665,416,415.56 : 918,213,029.22 = 368,052,257.62 : x - Step 2: Convert to fraction form
665,416,415.56/918,213,029.22 = 368,052,257.62/x - Step 3: Cross multiply
665,416,415.56x = 918,213,029.22 × 368,052,257.62 - Step 4: Simplify right side
665,416,415.56x = 337,950,378,380,520,064 - Step 5: Solve for x
x = 337,950,378,380,520,064/665,416,415.56 - Step 6: Final answer
x = 507,878,030.17
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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.