Finding the Fourth Proportional to 517,467,811.20, 776,201,716.80 and 425,634,806.40
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Solution
The fourth proportional to 517,467,811.20, 776,201,716.80 and 425,634,806.40 is: 638,452,209.60
Step by Step Solution
- Step 1: Write the proportion equation
517,467,811.20 : 776,201,716.80 = 425,634,806.40 : x - Step 2: Convert to fraction form
517,467,811.20/776,201,716.80 = 425,634,806.40/x - Step 3: Cross multiply
517,467,811.20x = 776,201,716.80 × 425,634,806.40 - Step 4: Simplify right side
517,467,811.20x = 330,378,467,457,515,584 - Step 5: Solve for x
x = 330,378,467,457,515,584/517,467,811.20 - Step 6: Final answer
x = 638,452,209.60
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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.