Finding the Fourth Proportional to 642,202.16, 885,206.09 and 435,403.53
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Solution
The fourth proportional to 642,202.16, 885,206.09 and 435,403.53 is: 600,156.59
Step by Step Solution
- Step 1: Write the proportion equation
642,202.16 : 885,206.09 = 435,403.53 : x - Step 2: Convert to fraction form
642,202.16/885,206.09 = 435,403.53/x - Step 3: Cross multiply
642,202.16x = 885,206.09 × 435,403.53 - Step 4: Simplify right side
642,202.16x = 385,421,857,452.01 - Step 5: Solve for x
x = 385,421,857,452.01/642,202.16 - Step 6: Final answer
x = 600,156.59
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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.