Finding the Fourth Proportional to 1,125,215,979.30, 1,552,798,051.41 and 630,178,687.80
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Solution
The fourth proportional to 1,125,215,979.30, 1,552,798,051.41 and 630,178,687.80 is: 869,646,589.15
Step by Step Solution
- Step 1: Write the proportion equation
1,125,215,979.30 : 1,552,798,051.41 = 630,178,687.80 : x - Step 2: Convert to fraction form
1,125,215,979.30/1,552,798,051.41 = 630,178,687.80/x - Step 3: Cross multiply
1,125,215,979.30x = 1,552,798,051.41 × 630,178,687.80 - Step 4: Simplify right side
1,125,215,979.30x = 978,540,238,458,282,368 - Step 5: Solve for x
x = 978,540,238,458,282,368/1,125,215,979.30 - Step 6: Final answer
x = 869,646,589.15
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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.