Finding the Fourth Proportional to 20,780,862.80, 31,176,209.40 and 6,597,438.80
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Solution
The fourth proportional to 20,780,862.80, 31,176,209.40 and 6,597,438.80 is: 9,897,718.66
Step by Step Solution
- Step 1: Write the proportion equation
20,780,862.80 : 31,176,209.40 = 6,597,438.80 : x - Step 2: Convert to fraction form
20,780,862.80/31,176,209.40 = 6,597,438.80/x - Step 3: Cross multiply
20,780,862.80x = 31,176,209.40 × 6,597,438.80 - Step 4: Simplify right side
20,780,862.80x = 205,683,133,532,484.72 - Step 5: Solve for x
x = 205,683,133,532,484.72/20,780,862.80 - Step 6: Final answer
x = 9,897,718.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.