Finding the Fourth Proportional to 431,921,294.60, 648,033,107.34 and 125,231,811.08
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Solution
The fourth proportional to 431,921,294.60, 648,033,107.34 and 125,231,811.08 is: 187,891,545.72
Step by Step Solution
- Step 1: Write the proportion equation
431,921,294.60 : 648,033,107.34 = 125,231,811.08 : x - Step 2: Convert to fraction form
431,921,294.60/648,033,107.34 = 125,231,811.08/x - Step 3: Cross multiply
431,921,294.60x = 648,033,107.34 × 125,231,811.08 - Step 4: Simplify right side
431,921,294.60x = 81,154,359,671,988,240 - Step 5: Solve for x
x = 81,154,359,671,988,240/431,921,294.60 - Step 6: Final answer
x = 187,891,545.72
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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.