Finding the Fourth Proportional to 431,138,210.90, 646,707,316.35 and 124,440,329.30
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Solution
The fourth proportional to 431,138,210.90, 646,707,316.35 and 124,440,329.30 is: 186,660,493.95
Step by Step Solution
- Step 1: Write the proportion equation
431,138,210.90 : 646,707,316.35 = 124,440,329.30 : x - Step 2: Convert to fraction form
431,138,210.90/646,707,316.35 = 124,440,329.30/x - Step 3: Cross multiply
431,138,210.90x = 646,707,316.35 × 124,440,329.30 - Step 4: Simplify right side
431,138,210.90x = 80,476,471,407,313,280 - Step 5: Solve for x
x = 80,476,471,407,313,280/431,138,210.90 - Step 6: Final answer
x = 186,660,493.95
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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.