Finding the Fourth Proportional to 1,165,960,859.40, 1,749,031,706.70 and 389,609,296.20
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Solution
The fourth proportional to 1,165,960,859.40, 1,749,031,706.70 and 389,609,296.20 is: 584,444,157.61
Step by Step Solution
- Step 1: Write the proportion equation
1,165,960,859.40 : 1,749,031,706.70 = 389,609,296.20 : x - Step 2: Convert to fraction form
1,165,960,859.40/1,749,031,706.70 = 389,609,296.20/x - Step 3: Cross multiply
1,165,960,859.40x = 1,749,031,706.70 × 389,609,296.20 - Step 4: Simplify right side
1,165,960,859.40x = 681,439,012,278,871,808 - Step 5: Solve for x
x = 681,439,012,278,871,808/1,165,960,859.40 - Step 6: Final answer
x = 584,444,157.61
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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.