Finding the Fourth Proportional to 1,282,430,477.62, 1,769,740,532.66 and 717,919,995.51
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Solution
The fourth proportional to 1,282,430,477.62, 1,769,740,532.66 and 717,919,995.51 is: 990,722,021.53
Step by Step Solution
- Step 1: Write the proportion equation
1,282,430,477.62 : 1,769,740,532.66 = 717,919,995.51 : x - Step 2: Convert to fraction form
1,282,430,477.62/1,769,740,532.66 = 717,919,995.51/x - Step 3: Cross multiply
1,282,430,477.62x = 1,769,740,532.66 × 717,919,995.51 - Step 4: Simplify right side
1,282,430,477.62x = 1,270,532,115,261,132,288 - Step 5: Solve for x
x = 1,270,532,115,261,132,288/1,282,430,477.62 - Step 6: Final answer
x = 990,722,021.53
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.