Finding the Fourth Proportional to 728,161,899.84, 1,005,136,686.66 and 477,282,459.18
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Solution
The fourth proportional to 728,161,899.84, 1,005,136,686.66 and 477,282,459.18 is: 658,828,908.42
Step by Step Solution
- Step 1: Write the proportion equation
728,161,899.84 : 1,005,136,686.66 = 477,282,459.18 : x - Step 2: Convert to fraction form
728,161,899.84/1,005,136,686.66 = 477,282,459.18/x - Step 3: Cross multiply
728,161,899.84x = 1,005,136,686.66 × 477,282,459.18 - Step 4: Simplify right side
728,161,899.84x = 479,734,109,621,121,920 - Step 5: Solve for x
x = 479,734,109,621,121,920/728,161,899.84 - Step 6: Final answer
x = 658,828,908.42
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1.5x scale
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.