Finding the Fourth Proportional to 689,750.18, 951,938.08 and 417,810.09
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Solution
The fourth proportional to 689,750.18, 951,938.08 and 417,810.09 is: 576,628.10
Step by Step Solution
- Step 1: Write the proportion equation
689,750.18 : 951,938.08 = 417,810.09 : x - Step 2: Convert to fraction form
689,750.18/951,938.08 = 417,810.09/x - Step 3: Cross multiply
689,750.18x = 951,938.08 × 417,810.09 - Step 4: Simplify right side
689,750.18x = 397,729,334,879.23 - Step 5: Solve for x
x = 397,729,334,879.23/689,750.18 - Step 6: Final answer
x = 576,628.10
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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.