Finding the Fourth Proportional to 782,859,544.80, 1,175,195,998.80 and 420,062,488.80
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Solution
The fourth proportional to 782,859,544.80, 1,175,195,998.80 and 420,062,488.80 is: 630,580,235.45
Step by Step Solution
- Step 1: Write the proportion equation
782,859,544.80 : 1,175,195,998.80 = 420,062,488.80 : x - Step 2: Convert to fraction form
782,859,544.80/1,175,195,998.80 = 420,062,488.80/x - Step 3: Cross multiply
782,859,544.80x = 1,175,195,998.80 × 420,062,488.80 - Step 4: Simplify right side
782,859,544.80x = 493,655,756,083,729,792 - Step 5: Solve for x
x = 493,655,756,083,729,792/782,859,544.80 - Step 6: Final answer
x = 630,580,235.45
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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.