Finding the Fourth Proportional to 489,787,831.12, 675,907,182.90 and 269,771,267.92
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Solution
The fourth proportional to 489,787,831.12, 675,907,182.90 and 269,771,267.92 is: 372,284,336.49
Step by Step Solution
- Step 1: Write the proportion equation
489,787,831.12 : 675,907,182.90 = 269,771,267.92 : x - Step 2: Convert to fraction form
489,787,831.12/675,907,182.90 = 269,771,267.92/x - Step 3: Cross multiply
489,787,831.12x = 675,907,182.90 × 269,771,267.92 - Step 4: Simplify right side
489,787,831.12x = 182,340,337,727,168,352 - Step 5: Solve for x
x = 182,340,337,727,168,352/489,787,831.12 - Step 6: Final answer
x = 372,284,336.49
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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.