Finding the Fourth Proportional to 479,015,221.66, 661,037,155.66 and 278,090,739.70
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Solution
The fourth proportional to 479,015,221.66, 661,037,155.66 and 278,090,739.70 is: 383,762,985.55
Step by Step Solution
- Step 1: Write the proportion equation
479,015,221.66 : 661,037,155.66 = 278,090,739.70 : x - Step 2: Convert to fraction form
479,015,221.66/661,037,155.66 = 278,090,739.70/x - Step 3: Cross multiply
479,015,221.66x = 661,037,155.66 × 278,090,739.70 - Step 4: Simplify right side
479,015,221.66x = 183,828,311,586,673,440 - Step 5: Solve for x
x = 183,828,311,586,673,440/479,015,221.66 - Step 6: Final answer
x = 383,762,985.55
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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.