Finding the Fourth Proportional to 727,291,208.20, 1,090,936,812.30 and 509,187,821.80
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Solution
The fourth proportional to 727,291,208.20, 1,090,936,812.30 and 509,187,821.80 is: 763,781,732.70
Step by Step Solution
- Step 1: Write the proportion equation
727,291,208.20 : 1,090,936,812.30 = 509,187,821.80 : x - Step 2: Convert to fraction form
727,291,208.20/1,090,936,812.30 = 509,187,821.80/x - Step 3: Cross multiply
727,291,208.20x = 1,090,936,812.30 × 509,187,821.80 - Step 4: Simplify right side
727,291,208.20x = 555,491,739,176,472,448 - Step 5: Solve for x
x = 555,491,739,176,472,448/727,291,208.20 - Step 6: Final answer
x = 763,781,732.70
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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.