Finding the Fourth Proportional to 489,944,998.40, 734,901,751.20 and 162,435,624.80
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Solution
The fourth proportional to 489,944,998.40, 734,901,751.20 and 162,435,624.80 is: 243,648,216.66
Step by Step Solution
- Step 1: Write the proportion equation
489,944,998.40 : 734,901,751.20 = 162,435,624.80 : x - Step 2: Convert to fraction form
489,944,998.40/734,901,751.20 = 162,435,624.80/x - Step 3: Cross multiply
489,944,998.40x = 734,901,751.20 × 162,435,624.80 - Step 4: Simplify right side
489,944,998.40x = 119,374,225,122,786,160 - Step 5: Solve for x
x = 119,374,225,122,786,160/489,944,998.40 - Step 6: Final answer
x = 243,648,216.66
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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.