Finding the Fourth Proportional to 985,819,867.20, 1,360,426,471.20 and 539,775,132.48
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Solution
The fourth proportional to 985,819,867.20, 1,360,426,471.20 and 539,775,132.48 is: 744,886,974.95
Step by Step Solution
- Step 1: Write the proportion equation
985,819,867.20 : 1,360,426,471.20 = 539,775,132.48 : x - Step 2: Convert to fraction form
985,819,867.20/1,360,426,471.20 = 539,775,132.48/x - Step 3: Cross multiply
985,819,867.20x = 1,360,426,471.20 × 539,775,132.48 - Step 4: Simplify right side
985,819,867.20x = 734,324,378,721,278,976 - Step 5: Solve for x
x = 734,324,378,721,278,976/985,819,867.20 - Step 6: Final answer
x = 744,886,974.95
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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.