Finding the Fourth Proportional to 517,596,873.20, 776,395,309.80 and 469,821,129.20
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Solution
The fourth proportional to 517,596,873.20, 776,395,309.80 and 469,821,129.20 is: 704,731,693.80
Step by Step Solution
- Step 1: Write the proportion equation
517,596,873.20 : 776,395,309.80 = 469,821,129.20 : x - Step 2: Convert to fraction form
517,596,873.20/776,395,309.80 = 469,821,129.20/x - Step 3: Cross multiply
517,596,873.20x = 776,395,309.80 × 469,821,129.20 - Step 4: Simplify right side
517,596,873.20x = 364,766,921,155,819,776 - Step 5: Solve for x
x = 364,766,921,155,819,776/517,596,873.20 - Step 6: Final answer
x = 704,731,693.80
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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.