Finding the Fourth Proportional to 947,553,203.70, 1,421,329,805.55 and 947,553,203.70
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Solution
The fourth proportional to 947,553,203.70, 1,421,329,805.55 and 947,553,203.70 is: 1,421,329,805.55
Step by Step Solution
- Step 1: Write the proportion equation
947,553,203.70 : 1,421,329,805.55 = 947,553,203.70 : x - Step 2: Convert to fraction form
947,553,203.70/1,421,329,805.55 = 947,553,203.70/x - Step 3: Cross multiply
947,553,203.70x = 1,421,329,805.55 × 947,553,203.70 - Step 4: Simplify right side
947,553,203.70x = 1,346,785,610,763,200,512 - Step 5: Solve for x
x = 1,346,785,610,763,200,512/947,553,203.70 - Step 6: Final answer
x = 1,421,329,805.55
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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.