Finding the Fourth Proportional to 319,133,863.80, 478,700,795.70 and 278,823,079.80
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Solution
The fourth proportional to 319,133,863.80, 478,700,795.70 and 278,823,079.80 is: 418,234,619.70
Step by Step Solution
- Step 1: Write the proportion equation
319,133,863.80 : 478,700,795.70 = 278,823,079.80 : x - Step 2: Convert to fraction form
319,133,863.80/478,700,795.70 = 278,823,079.80/x - Step 3: Cross multiply
319,133,863.80x = 478,700,795.70 × 278,823,079.80 - Step 4: Simplify right side
319,133,863.80x = 133,472,830,159,784,592 - Step 5: Solve for x
x = 133,472,830,159,784,592/319,133,863.80 - Step 6: Final answer
x = 418,234,619.70
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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.