Finding the Fourth Proportional to 869,136.40, 1,303,267.20 and 514,259.20
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Solution
The fourth proportional to 869,136.40, 1,303,267.20 and 514,259.20 is: 771,129.99
Step by Step Solution
- Step 1: Write the proportion equation
869,136.40 : 1,303,267.20 = 514,259.20 : x - Step 2: Convert to fraction form
869,136.40/1,303,267.20 = 514,259.20/x - Step 3: Cross multiply
869,136.40x = 1,303,267.20 × 514,259.20 - Step 4: Simplify right side
869,136.40x = 670,217,147,658.24 - Step 5: Solve for x
x = 670,217,147,658.24/869,136.40 - Step 6: Final answer
x = 771,129.99
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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.