Finding the Fourth Proportional to 3,115,563.98, 4,299,484.23 and 1,720,128.30
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Solution
The fourth proportional to 3,115,563.98, 4,299,484.23 and 1,720,128.30 is: 2,373,780.34
Step by Step Solution
- Step 1: Write the proportion equation
3,115,563.98 : 4,299,484.23 = 1,720,128.30 : x - Step 2: Convert to fraction form
3,115,563.98/4,299,484.23 = 1,720,128.30/x - Step 3: Cross multiply
3,115,563.98x = 4,299,484.23 × 1,720,128.30 - Step 4: Simplify right side
3,115,563.98x = 7,395,664,499,426.71 - Step 5: Solve for x
x = 7,395,664,499,426.71/3,115,563.98 - Step 6: Final answer
x = 2,373,780.34
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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.