Finding the Fourth Proportional to 1,439,430,769.51, 2,159,942,878.91 and 702,506,778.19
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Solution
The fourth proportional to 1,439,430,769.51, 2,159,942,878.91 and 702,506,778.19 is: 1,054,149,004.64
Step by Step Solution
- Step 1: Write the proportion equation
1,439,430,769.51 : 2,159,942,878.91 = 702,506,778.19 : x - Step 2: Convert to fraction form
1,439,430,769.51/2,159,942,878.91 = 702,506,778.19/x - Step 3: Cross multiply
1,439,430,769.51x = 2,159,942,878.91 × 702,506,778.19 - Step 4: Simplify right side
1,439,430,769.51x = 1,517,374,512,933,985,024 - Step 5: Solve for x
x = 1,517,374,512,933,985,024/1,439,430,769.51 - Step 6: Final answer
x = 1,054,149,004.64
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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.