Finding the Fourth Proportional to 747,162.75, 1,031,084.84 and 478,890.75
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Solution
The fourth proportional to 747,162.75, 1,031,084.84 and 478,890.75 is: 660,869.39
Step by Step Solution
- Step 1: Write the proportion equation
747,162.75 : 1,031,084.84 = 478,890.75 : x - Step 2: Convert to fraction form
747,162.75/1,031,084.84 = 478,890.75/x - Step 3: Cross multiply
747,162.75x = 1,031,084.84 × 478,890.75 - Step 4: Simplify right side
747,162.75x = 493,776,989,946.78 - Step 5: Solve for x
x = 493,776,989,946.78/747,162.75 - Step 6: Final answer
x = 660,869.39
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.