Finding the Fourth Proportional to 1,278,430.26, 1,918,501.48 and 530,476.98
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Solution
The fourth proportional to 1,278,430.26, 1,918,501.48 and 530,476.98 is: 796,070.70
Step by Step Solution
- Step 1: Write the proportion equation
1,278,430.26 : 1,918,501.48 = 530,476.98 : x - Step 2: Convert to fraction form
1,278,430.26/1,918,501.48 = 530,476.98/x - Step 3: Cross multiply
1,278,430.26x = 1,918,501.48 × 530,476.98 - Step 4: Simplify right side
1,278,430.26x = 1,017,720,871,235.93 - Step 5: Solve for x
x = 1,017,720,871,235.93/1,278,430.26 - Step 6: Final answer
x = 796,070.70
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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.