Finding the Fourth Proportional to 642,744,120.30, 886,996,604.46 and 360,549,115.08
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Solution
The fourth proportional to 642,744,120.30, 886,996,604.46 and 360,549,115.08 is: 497,563,230.40
Step by Step Solution
- Step 1: Write the proportion equation
642,744,120.30 : 886,996,604.46 = 360,549,115.08 : x - Step 2: Convert to fraction form
642,744,120.30/886,996,604.46 = 360,549,115.08/x - Step 3: Cross multiply
642,744,120.30x = 886,996,604.46 × 360,549,115.08 - Step 4: Simplify right side
642,744,120.30x = 319,805,840,817,017,792 - Step 5: Solve for x
x = 319,805,840,817,017,792/642,744,120.30 - Step 6: Final answer
x = 497,563,230.40
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.