Finding the Fourth Proportional to 528,983.40, 730,220.57 and 357,134.15
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Solution
The fourth proportional to 528,983.40, 730,220.57 and 357,134.15 is: 492,995.99
Step by Step Solution
- Step 1: Write the proportion equation
528,983.40 : 730,220.57 = 357,134.15 : x - Step 2: Convert to fraction form
528,983.40/730,220.57 = 357,134.15/x - Step 3: Cross multiply
528,983.40x = 730,220.57 × 357,134.15 - Step 4: Simplify right side
528,983.40x = 260,786,697,142.69 - Step 5: Solve for x
x = 260,786,697,142.69/528,983.40 - Step 6: Final answer
x = 492,995.99
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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.