Finding the Fourth Proportional to 1,681,437.20, 2,320,439.32 and 917,532.68
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Solution
The fourth proportional to 1,681,437.20, 2,320,439.32 and 917,532.68 is: 1,266,225.65
Step by Step Solution
- Step 1: Write the proportion equation
1,681,437.20 : 2,320,439.32 = 917,532.68 : x - Step 2: Convert to fraction form
1,681,437.20/2,320,439.32 = 917,532.68/x - Step 3: Cross multiply
1,681,437.20x = 2,320,439.32 × 917,532.68 - Step 4: Simplify right side
1,681,437.20x = 2,129,078,908,056.98 - Step 5: Solve for x
x = 2,129,078,908,056.98/1,681,437.20 - Step 6: Final answer
x = 1,266,225.65
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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.