Finding the Fourth Proportional to 472,825,975.80, 709,238,963.70 and 291,427,447.80
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Solution
The fourth proportional to 472,825,975.80, 709,238,963.70 and 291,427,447.80 is: 437,141,171.70
Step by Step Solution
- Step 1: Write the proportion equation
472,825,975.80 : 709,238,963.70 = 291,427,447.80 : x - Step 2: Convert to fraction form
472,825,975.80/709,238,963.70 = 291,427,447.80/x - Step 3: Cross multiply
472,825,975.80x = 709,238,963.70 × 291,427,447.80 - Step 4: Simplify right side
472,825,975.80x = 206,691,701,071,407,872 - Step 5: Solve for x
x = 206,691,701,071,407,872/472,825,975.80 - Step 6: Final answer
x = 437,141,171.70
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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.