Finding the Fourth Proportional to 1,260,784,231.30, 1,891,176,346.95 and 442,896,532.30
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Solution
The fourth proportional to 1,260,784,231.30, 1,891,176,346.95 and 442,896,532.30 is: 664,344,798.45
Step by Step Solution
- Step 1: Write the proportion equation
1,260,784,231.30 : 1,891,176,346.95 = 442,896,532.30 : x - Step 2: Convert to fraction form
1,260,784,231.30/1,891,176,346.95 = 442,896,532.30/x - Step 3: Cross multiply
1,260,784,231.30x = 1,891,176,346.95 × 442,896,532.30 - Step 4: Simplify right side
1,260,784,231.30x = 837,595,446,031,936,768 - Step 5: Solve for x
x = 837,595,446,031,936,768/1,260,784,231.30 - Step 6: Final answer
x = 664,344,798.45
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Double scale
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Similar ratio
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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.