Finding the Fourth Proportional to 747,711.70, 1,121,567.55 and 249,075.70
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Solution
The fourth proportional to 747,711.70, 1,121,567.55 and 249,075.70 is: 373,613.55
Step by Step Solution
- Step 1: Write the proportion equation
747,711.70 : 1,121,567.55 = 249,075.70 : x - Step 2: Convert to fraction form
747,711.70/1,121,567.55 = 249,075.70/x - Step 3: Cross multiply
747,711.70x = 1,121,567.55 × 249,075.70 - Step 4: Simplify right side
747,711.70x = 279,355,222,613.54 - Step 5: Solve for x
x = 279,355,222,613.54/747,711.70 - Step 6: Final answer
x = 373,613.55
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Double scale
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Similar ratio
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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.