Finding the Fourth Proportional to 920,890.48, 1,270,831.08 and 533,780.68
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Solution
The fourth proportional to 920,890.48, 1,270,831.08 and 533,780.68 is: 736,618.62
Step by Step Solution
- Step 1: Write the proportion equation
920,890.48 : 1,270,831.08 = 533,780.68 : x - Step 2: Convert to fraction form
920,890.48/1,270,831.08 = 533,780.68/x - Step 3: Cross multiply
920,890.48x = 1,270,831.08 × 533,780.68 - Step 4: Simplify right side
920,890.48x = 678,345,078,047.54 - Step 5: Solve for x
x = 678,345,078,047.54/920,890.48 - Step 6: Final answer
x = 736,618.62
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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.