Finding the Fourth Proportional to 1,125,128.16, 1,552,678.74 and 615,862.80
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Solution
The fourth proportional to 1,125,128.16, 1,552,678.74 and 615,862.80 is: 849,891.69
Step by Step Solution
- Step 1: Write the proportion equation
1,125,128.16 : 1,552,678.74 = 615,862.80 : x - Step 2: Convert to fraction form
1,125,128.16/1,552,678.74 = 615,862.80/x - Step 3: Cross multiply
1,125,128.16x = 1,552,678.74 × 615,862.80 - Step 4: Simplify right side
1,125,128.16x = 956,237,076,316.87 - Step 5: Solve for x
x = 956,237,076,316.87/1,125,128.16 - Step 6: Final answer
x = 849,891.69
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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.