Finding the Fourth Proportional to 320,386,965.70, 449,562,118.70 and 320,386,965.70
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Solution
The fourth proportional to 320,386,965.70, 449,562,118.70 and 320,386,965.70 is: 449,562,118.70
Step by Step Solution
- Step 1: Write the proportion equation
320,386,965.70 : 449,562,118.70 = 320,386,965.70 : x - Step 2: Convert to fraction form
320,386,965.70/449,562,118.70 = 320,386,965.70/x - Step 3: Cross multiply
320,386,965.70x = 449,562,118.70 × 320,386,965.70 - Step 4: Simplify right side
320,386,965.70x = 144,033,843,103,956,224 - Step 5: Solve for x
x = 144,033,843,103,956,224/320,386,965.70 - Step 6: Final answer
x = 449,562,118.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.