Finding the Fourth Proportional to 10,368,636.80, 15,552,955.20 and 9,780,771.20
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Solution
The fourth proportional to 10,368,636.80, 15,552,955.20 and 9,780,771.20 is: 14,671,156.80
Step by Step Solution
- Step 1: Write the proportion equation
10,368,636.80 : 15,552,955.20 = 9,780,771.20 : x - Step 2: Convert to fraction form
10,368,636.80/15,552,955.20 = 9,780,771.20/x - Step 3: Cross multiply
10,368,636.80x = 15,552,955.20 × 9,780,771.20 - Step 4: Simplify right side
10,368,636.80x = 152,119,896,295,050.22 - Step 5: Solve for x
x = 152,119,896,295,050.22/10,368,636.80 - Step 6: Final answer
x = 14,671,156.80
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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.