Finding the Fourth Proportional to 2,624,406,739.20, 3,937,176,979.20 and 784,345,420.80
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Solution
The fourth proportional to 2,624,406,739.20, 3,937,176,979.20 and 784,345,420.80 is: 1,176,687,549.38
Step by Step Solution
- Step 1: Write the proportion equation
2,624,406,739.20 : 3,937,176,979.20 = 784,345,420.80 : x - Step 2: Convert to fraction form
2,624,406,739.20/3,937,176,979.20 = 784,345,420.80/x - Step 3: Cross multiply
2,624,406,739.20x = 3,937,176,979.20 × 784,345,420.80 - Step 4: Simplify right side
2,624,406,739.20x = 3,088,106,734,514,696,704 - Step 5: Solve for x
x = 3,088,106,734,514,696,704/2,624,406,739.20 - Step 6: Final answer
x = 1,176,687,549.38
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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.