Finding the Fourth Proportional to 977,618,420.80, 1,466,427,631.20 and 851,348,039.20
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Solution
The fourth proportional to 977,618,420.80, 1,466,427,631.20 and 851,348,039.20 is: 1,277,022,058.80
Step by Step Solution
- Step 1: Write the proportion equation
977,618,420.80 : 1,466,427,631.20 = 851,348,039.20 : x - Step 2: Convert to fraction form
977,618,420.80/1,466,427,631.20 = 851,348,039.20/x - Step 3: Cross multiply
977,618,420.80x = 1,466,427,631.20 × 851,348,039.20 - Step 4: Simplify right side
977,618,420.80x = 1,248,440,288,450,820,864 - Step 5: Solve for x
x = 1,248,440,288,450,820,864/977,618,420.80 - Step 6: Final answer
x = 1,277,022,058.80
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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.