Finding the Fourth Proportional to 708,634,542.80, 1,062,951,814.20 and 644,011,317.20
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Solution
The fourth proportional to 708,634,542.80, 1,062,951,814.20 and 644,011,317.20 is: 966,016,975.80
Step by Step Solution
- Step 1: Write the proportion equation
708,634,542.80 : 1,062,951,814.20 = 644,011,317.20 : x - Step 2: Convert to fraction form
708,634,542.80/1,062,951,814.20 = 644,011,317.20/x - Step 3: Cross multiply
708,634,542.80x = 1,062,951,814.20 × 644,011,317.20 - Step 4: Simplify right side
708,634,542.80x = 684,552,997,983,071,744 - Step 5: Solve for x
x = 684,552,997,983,071,744/708,634,542.80 - Step 6: Final answer
x = 966,016,975.80
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Double scale
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Similar ratio
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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.