Finding the Fourth Proportional to 2,130,164.16, 2,939,237.74 and 1,212,339.58
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Solution
The fourth proportional to 2,130,164.16, 2,939,237.74 and 1,212,339.58 is: 1,672,807.34
Step by Step Solution
- Step 1: Write the proportion equation
2,130,164.16 : 2,939,237.74 = 1,212,339.58 : x - Step 2: Convert to fraction form
2,130,164.16/2,939,237.74 = 1,212,339.58/x - Step 3: Cross multiply
2,130,164.16x = 2,939,237.74 × 1,212,339.58 - Step 4: Simplify right side
2,130,164.16x = 3,563,354,247,231.75 - Step 5: Solve for x
x = 3,563,354,247,231.75/2,130,164.16 - Step 6: Final answer
x = 1,672,807.34
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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.