Finding the Fourth Proportional to 1,142,144.17, 1,713,220.11 and 289,215.41
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Solution
The fourth proportional to 1,142,144.17, 1,713,220.11 and 289,215.41 is: 433,824.09
Step by Step Solution
- Step 1: Write the proportion equation
1,142,144.17 : 1,713,220.11 = 289,215.41 : x - Step 2: Convert to fraction form
1,142,144.17/1,713,220.11 = 289,215.41/x - Step 3: Cross multiply
1,142,144.17x = 1,713,220.11 × 289,215.41 - Step 4: Simplify right side
1,142,144.17x = 495,489,656,533.90 - Step 5: Solve for x
x = 495,489,656,533.90/1,142,144.17 - Step 6: Final answer
x = 433,824.09
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.