Finding the Fourth Proportional to 486,281,423.80, 729,422,135.70 and 145,879,247.80
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Solution
The fourth proportional to 486,281,423.80, 729,422,135.70 and 145,879,247.80 is: 218,818,871.70
Step by Step Solution
- Step 1: Write the proportion equation
486,281,423.80 : 729,422,135.70 = 145,879,247.80 : x - Step 2: Convert to fraction form
486,281,423.80/729,422,135.70 = 145,879,247.80/x - Step 3: Cross multiply
486,281,423.80x = 729,422,135.70 × 145,879,247.80 - Step 4: Simplify right side
486,281,423.80x = 106,407,552,484,585,536 - Step 5: Solve for x
x = 106,407,552,484,585,536/486,281,423.80 - Step 6: Final answer
x = 218,818,871.70
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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.