Finding the Fourth Proportional to 402,403,750.08, 603,544,981.60 and 257,847,478.72
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Solution
The fourth proportional to 402,403,750.08, 603,544,981.60 and 257,847,478.72 is: 386,732,359.65
Step by Step Solution
- Step 1: Write the proportion equation
402,403,750.08 : 603,544,981.60 = 257,847,478.72 : x - Step 2: Convert to fraction form
402,403,750.08/603,544,981.60 = 257,847,478.72/x - Step 3: Cross multiply
402,403,750.08x = 603,544,981.60 × 257,847,478.72 - Step 4: Simplify right side
402,403,750.08x = 155,622,551,799,668,800 - Step 5: Solve for x
x = 155,622,551,799,668,800/402,403,750.08 - Step 6: Final answer
x = 386,732,359.65
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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.