Finding the Fourth Proportional to 918,292.60, 1,377,438.90 and 493,139.80
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Solution
The fourth proportional to 918,292.60, 1,377,438.90 and 493,139.80 is: 739,709.70
Step by Step Solution
- Step 1: Write the proportion equation
918,292.60 : 1,377,438.90 = 493,139.80 : x - Step 2: Convert to fraction form
918,292.60/1,377,438.90 = 493,139.80/x - Step 3: Cross multiply
918,292.60x = 1,377,438.90 × 493,139.80 - Step 4: Simplify right side
918,292.60x = 679,269,943,658.22 - Step 5: Solve for x
x = 679,269,943,658.22/918,292.60 - Step 6: Final answer
x = 739,709.70
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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.