Finding the Fourth Proportional to 1,313,480,832.70, 1,812,603,692.02 and 718,765,443.40
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Solution
The fourth proportional to 1,313,480,832.70, 1,812,603,692.02 and 718,765,443.40 is: 991,896,390.09
Step by Step Solution
- Step 1: Write the proportion equation
1,313,480,832.70 : 1,812,603,692.02 = 718,765,443.40 : x - Step 2: Convert to fraction form
1,313,480,832.70/1,812,603,692.02 = 718,765,443.40/x - Step 3: Cross multiply
1,313,480,832.70x = 1,812,603,692.02 × 718,765,443.40 - Step 4: Simplify right side
1,313,480,832.70x = 1,302,836,896,403,232,256 - Step 5: Solve for x
x = 1,302,836,896,403,232,256/1,313,480,832.70 - Step 6: Final answer
x = 991,896,390.09
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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.