Finding the Fourth Proportional to 747,357,418.70, 1,121,036,128.05 and 402,983,650.70
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Solution
The fourth proportional to 747,357,418.70, 1,121,036,128.05 and 402,983,650.70 is: 604,475,476.05
Step by Step Solution
- Step 1: Write the proportion equation
747,357,418.70 : 1,121,036,128.05 = 402,983,650.70 : x - Step 2: Convert to fraction form
747,357,418.70/1,121,036,128.05 = 402,983,650.70/x - Step 3: Cross multiply
747,357,418.70x = 1,121,036,128.05 × 402,983,650.70 - Step 4: Simplify right side
747,357,418.70x = 451,759,231,448,181,632 - Step 5: Solve for x
x = 451,759,231,448,181,632/747,357,418.70 - Step 6: Final answer
x = 604,475,476.05
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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.