Finding the Fourth Proportional to 442,615,497.80, 663,923,246.70 and 429,860,913.80
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Solution
The fourth proportional to 442,615,497.80, 663,923,246.70 and 429,860,913.80 is: 644,791,370.70
Step by Step Solution
- Step 1: Write the proportion equation
442,615,497.80 : 663,923,246.70 = 429,860,913.80 : x - Step 2: Convert to fraction form
442,615,497.80/663,923,246.70 = 429,860,913.80/x - Step 3: Cross multiply
442,615,497.80x = 663,923,246.70 × 429,860,913.80 - Step 4: Simplify right side
442,615,497.80x = 285,394,653,519,524,864 - Step 5: Solve for x
x = 285,394,653,519,524,864/442,615,497.80 - Step 6: Final answer
x = 644,791,370.70
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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.