Finding the Fourth Proportional to 689,848,473.20, 1,034,772,709.80 and 344,855,346.80
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Solution
The fourth proportional to 689,848,473.20, 1,034,772,709.80 and 344,855,346.80 is: 517,283,020.20
Step by Step Solution
- Step 1: Write the proportion equation
689,848,473.20 : 1,034,772,709.80 = 344,855,346.80 : x - Step 2: Convert to fraction form
689,848,473.20/1,034,772,709.80 = 344,855,346.80/x - Step 3: Cross multiply
689,848,473.20x = 1,034,772,709.80 × 344,855,346.80 - Step 4: Simplify right side
689,848,473.20x = 356,846,901,697,254,784 - Step 5: Solve for x
x = 356,846,901,697,254,784/689,848,473.20 - Step 6: Final answer
x = 517,283,020.20
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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.