Finding the Fourth Proportional to 398,609,125.80, 597,913,688.70 and 398,609,125.80
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Solution
The fourth proportional to 398,609,125.80, 597,913,688.70 and 398,609,125.80 is: 597,913,688.70
Step by Step Solution
- Step 1: Write the proportion equation
398,609,125.80 : 597,913,688.70 = 398,609,125.80 : x - Step 2: Convert to fraction form
398,609,125.80/597,913,688.70 = 398,609,125.80/x - Step 3: Cross multiply
398,609,125.80x = 597,913,688.70 × 398,609,125.80 - Step 4: Simplify right side
398,609,125.80x = 238,333,852,756,560,352 - Step 5: Solve for x
x = 238,333,852,756,560,352/398,609,125.80 - Step 6: Final answer
x = 597,913,688.70
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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.