Finding the Fourth Proportional to 993,732,905.80, 1,490,599,358.70 and 339,422,746.60
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Solution
The fourth proportional to 993,732,905.80, 1,490,599,358.70 and 339,422,746.60 is: 509,134,119.90
Step by Step Solution
- Step 1: Write the proportion equation
993,732,905.80 : 1,490,599,358.70 = 339,422,746.60 : x - Step 2: Convert to fraction form
993,732,905.80/1,490,599,358.70 = 339,422,746.60/x - Step 3: Cross multiply
993,732,905.80x = 1,490,599,358.70 × 339,422,746.60 - Step 4: Simplify right side
993,732,905.80x = 505,943,328,410,152,640 - Step 5: Solve for x
x = 505,943,328,410,152,640/993,732,905.80 - Step 6: Final answer
x = 509,134,119.90
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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.