Finding the Fourth Proportional to 1,119,422.21, 1,545,023.09 and 779,693.63
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Solution
The fourth proportional to 1,119,422.21, 1,545,023.09 and 779,693.63 is: 1,076,130.75
Step by Step Solution
- Step 1: Write the proportion equation
1,119,422.21 : 1,545,023.09 = 779,693.63 : x - Step 2: Convert to fraction form
1,119,422.21/1,545,023.09 = 779,693.63/x - Step 3: Cross multiply
1,119,422.21x = 1,545,023.09 × 779,693.63 - Step 4: Simplify right side
1,119,422.21x = 1,204,644,655,700.04 - Step 5: Solve for x
x = 1,204,644,655,700.04/1,119,422.21 - Step 6: Final answer
x = 1,076,130.75
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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.