Finding the Fourth Proportional to 690,345.85, 951,862.11 and 472,660.09
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Solution
The fourth proportional to 690,345.85, 951,862.11 and 472,660.09 is: 651,712.81
Step by Step Solution
- Step 1: Write the proportion equation
690,345.85 : 951,862.11 = 472,660.09 : x - Step 2: Convert to fraction form
690,345.85/951,862.11 = 472,660.09/x - Step 3: Cross multiply
690,345.85x = 951,862.11 × 472,660.09 - Step 4: Simplify right side
690,345.85x = 449,907,230,580.19 - Step 5: Solve for x
x = 449,907,230,580.19/690,345.85 - Step 6: Final answer
x = 651,712.81
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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.