Finding the Fourth Proportional to 409,471,975.80, 614,207,963.70 and 133,122,655.80
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Solution
The fourth proportional to 409,471,975.80, 614,207,963.70 and 133,122,655.80 is: 199,683,983.70
Step by Step Solution
- Step 1: Write the proportion equation
409,471,975.80 : 614,207,963.70 = 133,122,655.80 : x - Step 2: Convert to fraction form
409,471,975.80/614,207,963.70 = 133,122,655.80/x - Step 3: Cross multiply
409,471,975.80x = 614,207,963.70 × 133,122,655.80 - Step 4: Simplify right side
409,471,975.80x = 81,764,995,341,254,000 - Step 5: Solve for x
x = 81,764,995,341,254,000/409,471,975.80 - Step 6: Final answer
x = 199,683,983.70
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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.