Finding the Fourth Proportional to 885,735,985.20, 1,328,603,977.80 and 303,276,649.20
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Solution
The fourth proportional to 885,735,985.20, 1,328,603,977.80 and 303,276,649.20 is: 454,914,973.80
Step by Step Solution
- Step 1: Write the proportion equation
885,735,985.20 : 1,328,603,977.80 = 303,276,649.20 : x - Step 2: Convert to fraction form
885,735,985.20/1,328,603,977.80 = 303,276,649.20/x - Step 3: Cross multiply
885,735,985.20x = 1,328,603,977.80 × 303,276,649.20 - Step 4: Simplify right side
885,735,985.20x = 402,934,562,500,975,168 - Step 5: Solve for x
x = 402,934,562,500,975,168/885,735,985.20 - Step 6: Final answer
x = 454,914,973.80
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Similar ratio
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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.