Finding the Fourth Proportional to 409,728,005.80, 614,592,008.70 and 338,949,125.80
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Solution
The fourth proportional to 409,728,005.80, 614,592,008.70 and 338,949,125.80 is: 508,423,688.70
Step by Step Solution
- Step 1: Write the proportion equation
409,728,005.80 : 614,592,008.70 = 338,949,125.80 : x - Step 2: Convert to fraction form
409,728,005.80/614,592,008.70 = 338,949,125.80/x - Step 3: Cross multiply
409,728,005.80x = 614,592,008.70 × 338,949,125.80 - Step 4: Simplify right side
409,728,005.80x = 208,315,424,072,531,008 - Step 5: Solve for x
x = 208,315,424,072,531,008/409,728,005.80 - Step 6: Final answer
x = 508,423,688.70
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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.