Finding the Fourth Proportional to 1,679,616,430.80, 2,519,424,646.20 and 515,075,672.40
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Solution
The fourth proportional to 1,679,616,430.80, 2,519,424,646.20 and 515,075,672.40 is: 772,613,508.60
Step by Step Solution
- Step 1: Write the proportion equation
1,679,616,430.80 : 2,519,424,646.20 = 515,075,672.40 : x - Step 2: Convert to fraction form
1,679,616,430.80/2,519,424,646.20 = 515,075,672.40/x - Step 3: Cross multiply
1,679,616,430.80x = 2,519,424,646.20 × 515,075,672.40 - Step 4: Simplify right side
1,679,616,430.80x = 1,297,694,343,702,596,864 - Step 5: Solve for x
x = 1,297,694,343,702,596,864/1,679,616,430.80 - Step 6: Final answer
x = 772,613,508.60
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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.