Finding the Fourth Proportional to 10,417,211.20, 15,625,816.80 and 6,386,132.80
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Solution
The fourth proportional to 10,417,211.20, 15,625,816.80 and 6,386,132.80 is: 9,579,199.20
Step by Step Solution
- Step 1: Write the proportion equation
10,417,211.20 : 15,625,816.80 = 6,386,132.80 : x - Step 2: Convert to fraction form
10,417,211.20/15,625,816.80 = 6,386,132.80/x - Step 3: Cross multiply
10,417,211.20x = 15,625,816.80 × 6,386,132.80 - Step 4: Simplify right side
10,417,211.20x = 99,788,541,193,271.05 - Step 5: Solve for x
x = 99,788,541,193,271.05/10,417,211.20 - Step 6: Final answer
x = 9,579,199.20
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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.