Finding the Fourth Proportional to 10,257,878.80, 15,386,818.20 and 9,785,486.80
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Solution
The fourth proportional to 10,257,878.80, 15,386,818.20 and 9,785,486.80 is: 14,678,230.20
Step by Step Solution
- Step 1: Write the proportion equation
10,257,878.80 : 15,386,818.20 = 9,785,486.80 : x - Step 2: Convert to fraction form
10,257,878.80/15,386,818.20 = 9,785,486.80/x - Step 3: Cross multiply
10,257,878.80x = 15,386,818.20 × 9,785,486.80 - Step 4: Simplify right side
10,257,878.80x = 150,567,506,390,099.75 - Step 5: Solve for x
x = 150,567,506,390,099.75/10,257,878.80 - Step 6: Final answer
x = 14,678,230.20
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1.5x scale
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.