Finding the Fourth Proportional to 485,441,261.24, 670,091,117.12 and 318,188,300.84
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Solution
The fourth proportional to 485,441,261.24, 670,091,117.12 and 318,188,300.84 is: 439,219,265.00
Step by Step Solution
- Step 1: Write the proportion equation
485,441,261.24 : 670,091,117.12 = 318,188,300.84 : x - Step 2: Convert to fraction form
485,441,261.24/670,091,117.12 = 318,188,300.84/x - Step 3: Cross multiply
485,441,261.24x = 670,091,117.12 × 318,188,300.84 - Step 4: Simplify right side
485,441,261.24x = 213,215,153,964,390,208 - Step 5: Solve for x
x = 213,215,153,964,390,208/485,441,261.24 - Step 6: Final answer
x = 439,219,265.00
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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.