Finding the Fourth Proportional to 1,128,752.51, 1,557,235.07 and 645,058.17
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Solution
The fourth proportional to 1,128,752.51, 1,557,235.07 and 645,058.17 is: 889,926.89
Step by Step Solution
- Step 1: Write the proportion equation
1,128,752.51 : 1,557,235.07 = 645,058.17 : x - Step 2: Convert to fraction form
1,128,752.51/1,557,235.07 = 645,058.17/x - Step 3: Cross multiply
1,128,752.51x = 1,557,235.07 × 645,058.17 - Step 4: Simplify right side
1,128,752.51x = 1,004,507,201,288.73 - Step 5: Solve for x
x = 1,004,507,201,288.73/1,128,752.51 - Step 6: Final answer
x = 889,926.89
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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.