Finding the Fourth Proportional to 1,069,126.51, 1,475,394.50 and 639,406.63
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Solution
The fourth proportional to 1,069,126.51, 1,475,394.50 and 639,406.63 is: 882,381.10
Step by Step Solution
- Step 1: Write the proportion equation
1,069,126.51 : 1,475,394.50 = 639,406.63 : x - Step 2: Convert to fraction form
1,069,126.51/1,475,394.50 = 639,406.63/x - Step 3: Cross multiply
1,069,126.51x = 1,475,394.50 × 639,406.63 - Step 4: Simplify right side
1,069,126.51x = 943,377,025,165.54 - Step 5: Solve for x
x = 943,377,025,165.54/1,069,126.51 - Step 6: Final answer
x = 882,381.10
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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.