Finding the Fourth Proportional to 696,012.28, 960,564.36 and 390,140.62
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Solution
The fourth proportional to 696,012.28, 960,564.36 and 390,140.62 is: 538,431.84
Step by Step Solution
- Step 1: Write the proportion equation
696,012.28 : 960,564.36 = 390,140.62 : x - Step 2: Convert to fraction form
696,012.28/960,564.36 = 390,140.62/x - Step 3: Cross multiply
696,012.28x = 960,564.36 × 390,140.62 - Step 4: Simplify right side
696,012.28x = 374,755,174,960.30 - Step 5: Solve for x
x = 374,755,174,960.30/696,012.28 - Step 6: Final answer
x = 538,431.84
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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.