Finding the Fourth Proportional to 427,730,830.60, 641,734,420.86 and 197,850,711.88
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Solution
The fourth proportional to 427,730,830.60, 641,734,420.86 and 197,850,711.88 is: 296,839,981.88
Step by Step Solution
- Step 1: Write the proportion equation
427,730,830.60 : 641,734,420.86 = 197,850,711.88 : x - Step 2: Convert to fraction form
427,730,830.60/641,734,420.86 = 197,850,711.88/x - Step 3: Cross multiply
427,730,830.60x = 641,734,420.86 × 197,850,711.88 - Step 4: Simplify right side
427,730,830.60x = 126,967,612,005,050,528 - Step 5: Solve for x
x = 126,967,612,005,050,528/427,730,830.60 - Step 6: Final answer
x = 296,839,981.88
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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.