Finding the Fourth Proportional to 485,441,260.24, 670,091,115.74 and 318,188,299.84
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Solution
The fourth proportional to 485,441,260.24, 670,091,115.74 and 318,188,299.84 is: 439,219,263.62
Step by Step Solution
- Step 1: Write the proportion equation
485,441,260.24 : 670,091,115.74 = 318,188,299.84 : x - Step 2: Convert to fraction form
485,441,260.24/670,091,115.74 = 318,188,299.84/x - Step 3: Cross multiply
485,441,260.24x = 670,091,115.74 × 318,188,299.84 - Step 4: Simplify right side
485,441,260.24x = 213,215,152,854,319,488 - Step 5: Solve for x
x = 213,215,152,854,319,488/485,441,260.24 - Step 6: Final answer
x = 439,219,263.62
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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.