Finding the Fourth Proportional to 1,646,905.51, 2,272,211.72 and 921,637.99
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Solution
The fourth proportional to 1,646,905.51, 2,272,211.72 and 921,637.99 is: 1,271,570.60
Step by Step Solution
- Step 1: Write the proportion equation
1,646,905.51 : 2,272,211.72 = 921,637.99 : x - Step 2: Convert to fraction form
1,646,905.51/2,272,211.72 = 921,637.99/x - Step 3: Cross multiply
1,646,905.51x = 2,272,211.72 × 921,637.99 - Step 4: Simplify right side
1,646,905.51x = 2,094,156,632,186.52 - Step 5: Solve for x
x = 2,094,156,632,186.52/1,646,905.51 - Step 6: Final answer
x = 1,271,570.60
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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.