Finding the Fourth Proportional to 808,664,878.21, 1,215,130,270.99 and 435,448,699.97
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Solution
The fourth proportional to 808,664,878.21, 1,215,130,270.99 and 435,448,699.97 is: 654,321,599.78
Step by Step Solution
- Step 1: Write the proportion equation
808,664,878.21 : 1,215,130,270.99 = 435,448,699.97 : x - Step 2: Convert to fraction form
808,664,878.21/1,215,130,270.99 = 435,448,699.97/x - Step 3: Cross multiply
808,664,878.21x = 1,215,130,270.99 × 435,448,699.97 - Step 4: Simplify right side
808,664,878.21x = 529,126,896,796,789,312 - Step 5: Solve for x
x = 529,126,896,796,789,312/808,664,878.21 - Step 6: Final answer
x = 654,321,599.78
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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.