Finding the Fourth Proportional to 439,121,446.80, 658,617,379.17 and 128,145,565.50
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Solution
The fourth proportional to 439,121,446.80, 658,617,379.17 and 128,145,565.50 is: 192,199,440.76
Step by Step Solution
- Step 1: Write the proportion equation
439,121,446.80 : 658,617,379.17 = 128,145,565.50 : x - Step 2: Convert to fraction form
439,121,446.80/658,617,379.17 = 128,145,565.50/x - Step 3: Cross multiply
439,121,446.80x = 658,617,379.17 × 128,145,565.50 - Step 4: Simplify right side
439,121,446.80x = 84,398,896,498,574,480 - Step 5: Solve for x
x = 84,398,896,498,574,480/439,121,446.80 - Step 6: Final answer
x = 192,199,440.76
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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.