Finding the Fourth Proportional to 747,488,431.80, 1,121,232,647.70 and 359,217,637.20
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Solution
The fourth proportional to 747,488,431.80, 1,121,232,647.70 and 359,217,637.20 is: 538,826,455.80
Step by Step Solution
- Step 1: Write the proportion equation
747,488,431.80 : 1,121,232,647.70 = 359,217,637.20 : x - Step 2: Convert to fraction form
747,488,431.80/1,121,232,647.70 = 359,217,637.20/x - Step 3: Cross multiply
747,488,431.80x = 1,121,232,647.70 × 359,217,637.20 - Step 4: Simplify right side
747,488,431.80x = 402,766,542,458,294,016 - Step 5: Solve for x
x = 402,766,542,458,294,016/747,488,431.80 - Step 6: Final answer
x = 538,826,455.80
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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.