Finding the Fourth Proportional to 829,762,820.80, 1,244,707,216.80 and 247,451,617.60
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Solution
The fourth proportional to 829,762,820.80, 1,244,707,216.80 and 247,451,617.60 is: 371,196,209.95
Step by Step Solution
- Step 1: Write the proportion equation
829,762,820.80 : 1,244,707,216.80 = 247,451,617.60 : x - Step 2: Convert to fraction form
829,762,820.80/1,244,707,216.80 = 247,451,617.60/x - Step 3: Cross multiply
829,762,820.80x = 1,244,707,216.80 × 247,451,617.60 - Step 4: Simplify right side
829,762,820.80x = 308,004,814,235,553,856 - Step 5: Solve for x
x = 308,004,814,235,553,856/829,762,820.80 - Step 6: Final answer
x = 371,196,209.95
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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.