Finding the Fourth Proportional to 1,312,543.84, 1,811,311.73 and 708,931.84
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Solution
The fourth proportional to 1,312,543.84, 1,811,311.73 and 708,931.84 is: 978,326.60
Step by Step Solution
- Step 1: Write the proportion equation
1,312,543.84 : 1,811,311.73 = 708,931.84 : x - Step 2: Convert to fraction form
1,312,543.84/1,811,311.73 = 708,931.84/x - Step 3: Cross multiply
1,312,543.84x = 1,811,311.73 × 708,931.84 - Step 4: Simplify right side
1,312,543.84x = 1,284,096,554,017.82 - Step 5: Solve for x
x = 1,284,096,554,017.82/1,312,543.84 - Step 6: Final answer
x = 978,326.60
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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.