Finding the Fourth Proportional to 1,126,327,936.40, 1,554,335,900.20 and 624,572,068.08
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Solution
The fourth proportional to 1,126,327,936.40, 1,554,335,900.20 and 624,572,068.08 is: 861,911,310.47
Step by Step Solution
- Step 1: Write the proportion equation
1,126,327,936.40 : 1,554,335,900.20 = 624,572,068.08 : x - Step 2: Convert to fraction form
1,126,327,936.40/1,554,335,900.20 = 624,572,068.08/x - Step 3: Cross multiply
1,126,327,936.40x = 1,554,335,900.20 × 624,572,068.08 - Step 4: Simplify right side
1,126,327,936.40x = 970,794,787,678,902,528 - Step 5: Solve for x
x = 970,794,787,678,902,528/1,126,327,936.40 - Step 6: Final answer
x = 861,911,310.47
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.