Finding the Fourth Proportional to 965,715,920.79, 1,332,720,125.73 and 542,404,065.30
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Solution
The fourth proportional to 965,715,920.79, 1,332,720,125.73 and 542,404,065.30 is: 748,535,670.32
Step by Step Solution
- Step 1: Write the proportion equation
965,715,920.79 : 1,332,720,125.73 = 542,404,065.30 : x - Step 2: Convert to fraction form
965,715,920.79/1,332,720,125.73 = 542,404,065.30/x - Step 3: Cross multiply
965,715,920.79x = 1,332,720,125.73 × 542,404,065.30 - Step 4: Simplify right side
965,715,920.79x = 722,872,814,103,079,040 - Step 5: Solve for x
x = 722,872,814,103,079,040/965,715,920.79 - Step 6: Final answer
x = 748,535,670.32
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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.