Finding the Fourth Proportional to 431,115,379.40, 646,673,069.10 and 124,417,497.80
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Solution
The fourth proportional to 431,115,379.40, 646,673,069.10 and 124,417,497.80 is: 186,626,246.70
Step by Step Solution
- Step 1: Write the proportion equation
431,115,379.40 : 646,673,069.10 = 124,417,497.80 : x - Step 2: Convert to fraction form
431,115,379.40/646,673,069.10 = 124,417,497.80/x - Step 3: Cross multiply
431,115,379.40x = 646,673,069.10 × 124,417,497.80 - Step 4: Simplify right side
431,115,379.40x = 80,457,445,152,068,496 - Step 5: Solve for x
x = 80,457,445,152,068,496/431,115,379.40 - Step 6: Final answer
x = 186,626,246.70
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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.