Finding the Fourth Proportional to 1,121,372.79, 1,547,440.65 and 637,892.70
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Solution
The fourth proportional to 1,121,372.79, 1,547,440.65 and 637,892.70 is: 880,261.32
Step by Step Solution
- Step 1: Write the proportion equation
1,121,372.79 : 1,547,440.65 = 637,892.70 : x - Step 2: Convert to fraction form
1,121,372.79/1,547,440.65 = 637,892.70/x - Step 3: Cross multiply
1,121,372.79x = 1,547,440.65 × 637,892.70 - Step 4: Simplify right side
1,121,372.79x = 987,101,094,318.26 - Step 5: Solve for x
x = 987,101,094,318.26/1,121,372.79 - Step 6: Final answer
x = 880,261.32
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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.