Finding the Fourth Proportional to 628,901.92, 867,900.20 and 342,437.68
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Solution
The fourth proportional to 628,901.92, 867,900.20 and 342,437.68 is: 472,572.47
Step by Step Solution
- Step 1: Write the proportion equation
628,901.92 : 867,900.20 = 342,437.68 : x - Step 2: Convert to fraction form
628,901.92/867,900.20 = 342,437.68/x - Step 3: Cross multiply
628,901.92x = 867,900.20 × 342,437.68 - Step 4: Simplify right side
628,901.92x = 297,201,730,959.54 - Step 5: Solve for x
x = 297,201,730,959.54/628,901.92 - Step 6: Final answer
x = 472,572.47
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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.