Finding the Fourth Proportional to 438,220,949.80, 657,331,424.70 and 310,818,965.80
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Solution
The fourth proportional to 438,220,949.80, 657,331,424.70 and 310,818,965.80 is: 466,228,448.70
Step by Step Solution
- Step 1: Write the proportion equation
438,220,949.80 : 657,331,424.70 = 310,818,965.80 : x - Step 2: Convert to fraction form
438,220,949.80/657,331,424.70 = 310,818,965.80/x - Step 3: Cross multiply
438,220,949.80x = 657,331,424.70 × 310,818,965.80 - Step 4: Simplify right side
438,220,949.80x = 204,311,073,613,094,592 - Step 5: Solve for x
x = 204,311,073,613,094,592/438,220,949.80 - Step 6: Final answer
x = 466,228,448.70
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1.5x scale
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.