Finding the Fourth Proportional to 690,598.09, 953,157.74 and 388,792.09
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Solution
The fourth proportional to 690,598.09, 953,157.74 and 388,792.09 is: 536,607.61
Step by Step Solution
- Step 1: Write the proportion equation
690,598.09 : 953,157.74 = 388,792.09 : x - Step 2: Convert to fraction form
690,598.09/953,157.74 = 388,792.09/x - Step 3: Cross multiply
690,598.09x = 953,157.74 × 388,792.09 - Step 4: Simplify right side
690,598.09x = 370,580,189,834.28 - Step 5: Solve for x
x = 370,580,189,834.28/690,598.09 - Step 6: Final answer
x = 536,607.61
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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.