Finding the Fourth Proportional to 991,415,310.90, 1,368,145,563.48 and 545,369,069.58
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Solution
The fourth proportional to 991,415,310.90, 1,368,145,563.48 and 545,369,069.58 is: 752,605,154.27
Step by Step Solution
- Step 1: Write the proportion equation
991,415,310.90 : 1,368,145,563.48 = 545,369,069.58 : x - Step 2: Convert to fraction form
991,415,310.90/1,368,145,563.48 = 545,369,069.58/x - Step 3: Cross multiply
991,415,310.90x = 1,368,145,563.48 × 545,369,069.58 - Step 4: Simplify right side
991,415,310.90x = 746,144,273,005,092,480 - Step 5: Solve for x
x = 746,144,273,005,092,480/991,415,310.90 - Step 6: Final answer
x = 752,605,154.27
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1.5x scale
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.