Finding the Fourth Proportional to 1,125,216,030.38, 1,552,798,121.92 and 630,178,738.88
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Solution
The fourth proportional to 1,125,216,030.38, 1,552,798,121.92 and 630,178,738.88 is: 869,646,659.65
Step by Step Solution
- Step 1: Write the proportion equation
1,125,216,030.38 : 1,552,798,121.92 = 630,178,738.88 : x - Step 2: Convert to fraction form
1,125,216,030.38/1,552,798,121.92 = 630,178,738.88/x - Step 3: Cross multiply
1,125,216,030.38x = 1,552,798,121.92 × 630,178,738.88 - Step 4: Simplify right side
1,125,216,030.38x = 978,540,362,197,438,720 - Step 5: Solve for x
x = 978,540,362,197,438,720/1,125,216,030.38 - Step 6: Final answer
x = 869,646,659.65
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1.5x scale
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.