Finding the Fourth Proportional to 406,401.20, 561,903.36 and 355,955.12
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Solution
The fourth proportional to 406,401.20, 561,903.36 and 355,955.12 is: 492,154.99
Step by Step Solution
- Step 1: Write the proportion equation
406,401.20 : 561,903.36 = 355,955.12 : x - Step 2: Convert to fraction form
406,401.20/561,903.36 = 355,955.12/x - Step 3: Cross multiply
406,401.20x = 561,903.36 × 355,955.12 - Step 4: Simplify right side
406,401.20x = 200,012,377,937.20 - Step 5: Solve for x
x = 200,012,377,937.20/406,401.20 - Step 6: Final answer
x = 492,154.99
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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.