Finding the Fourth Proportional to 1,128,960.40, 1,557,959.88 and 619,671.44
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Solution
The fourth proportional to 1,128,960.40, 1,557,959.88 and 619,671.44 is: 855,143.58
Step by Step Solution
- Step 1: Write the proportion equation
1,128,960.40 : 1,557,959.88 = 619,671.44 : x - Step 2: Convert to fraction form
1,128,960.40/1,557,959.88 = 619,671.44/x - Step 3: Cross multiply
1,128,960.40x = 1,557,959.88 × 619,671.44 - Step 4: Simplify right side
1,128,960.40x = 965,423,242,301.83 - Step 5: Solve for x
x = 965,423,242,301.83/1,128,960.40 - Step 6: Final answer
x = 855,143.58
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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.