Finding the Fourth Proportional to 694,917,510.77, 958,982,455.50 and 377,374,981.03
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Solution
The fourth proportional to 694,917,510.77, 958,982,455.50 and 377,374,981.03 is: 520,775,459.45
Step by Step Solution
- Step 1: Write the proportion equation
694,917,510.77 : 958,982,455.50 = 377,374,981.03 : x - Step 2: Convert to fraction form
694,917,510.77/958,982,455.50 = 377,374,981.03/x - Step 3: Cross multiply
694,917,510.77x = 958,982,455.50 × 377,374,981.03 - Step 4: Simplify right side
694,917,510.77x = 361,895,985,952,415,296 - Step 5: Solve for x
x = 361,895,985,952,415,296/694,917,510.77 - Step 6: Final answer
x = 520,775,459.45
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.