Finding the Fourth Proportional to 913,728.21, 1,260,904.05 and 505,801.23
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Solution
The fourth proportional to 913,728.21, 1,260,904.05 and 505,801.23 is: 697,983.07
Step by Step Solution
- Step 1: Write the proportion equation
913,728.21 : 1,260,904.05 = 505,801.23 : x - Step 2: Convert to fraction form
913,728.21/1,260,904.05 = 505,801.23/x - Step 3: Cross multiply
913,728.21x = 1,260,904.05 × 505,801.23 - Step 4: Simplify right side
913,728.21x = 637,766,819,401.98 - Step 5: Solve for x
x = 637,766,819,401.98/913,728.21 - Step 6: Final answer
x = 697,983.07
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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.