Finding the Fourth Proportional to 1,272,555.84, 1,755,541.88 and 1,127,508.53
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Solution
The fourth proportional to 1,272,555.84, 1,755,541.88 and 1,127,508.53 is: 1,555,443.29
Step by Step Solution
- Step 1: Write the proportion equation
1,272,555.84 : 1,755,541.88 = 1,127,508.53 : x - Step 2: Convert to fraction form
1,272,555.84/1,755,541.88 = 1,127,508.53/x - Step 3: Cross multiply
1,272,555.84x = 1,755,541.88 × 1,127,508.53 - Step 4: Simplify right side
1,272,555.84x = 1,979,388,444,472.24 - Step 5: Solve for x
x = 1,979,388,444,472.24/1,272,555.84 - Step 6: Final answer
x = 1,555,443.29
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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.