Finding the Fourth Proportional to 768,736,607.60, 1,153,104,911.40 and 639,490,156.40
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Solution
The fourth proportional to 768,736,607.60, 1,153,104,911.40 and 639,490,156.40 is: 959,235,234.60
Step by Step Solution
- Step 1: Write the proportion equation
768,736,607.60 : 1,153,104,911.40 = 639,490,156.40 : x - Step 2: Convert to fraction form
768,736,607.60/1,153,104,911.40 = 639,490,156.40/x - Step 3: Cross multiply
768,736,607.60x = 1,153,104,911.40 × 639,490,156.40 - Step 4: Simplify right side
768,736,607.60x = 737,399,240,136,794,240 - Step 5: Solve for x
x = 737,399,240,136,794,240/768,736,607.60 - Step 6: Final answer
x = 959,235,234.60
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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.