Finding the Fourth Proportional to 479,015,197.90, 661,037,122.74 and 278,090,715.94
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Solution
The fourth proportional to 479,015,197.90, 661,037,122.74 and 278,090,715.94 is: 383,762,952.68
Step by Step Solution
- Step 1: Write the proportion equation
479,015,197.90 : 661,037,122.74 = 278,090,715.94 : x - Step 2: Convert to fraction form
479,015,197.90/661,037,122.74 = 278,090,715.94/x - Step 3: Cross multiply
479,015,197.90x = 661,037,122.74 × 278,090,715.94 - Step 4: Simplify right side
479,015,197.90x = 183,828,286,725,684,256 - Step 5: Solve for x
x = 183,828,286,725,684,256/479,015,197.90 - Step 6: Final answer
x = 383,762,952.68
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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.