Finding the Fourth Proportional to 1,780,332,370.47, 2,670,905,329.47 and 615,799,878.93
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Solution
The fourth proportional to 1,780,332,370.47, 2,670,905,329.47 and 615,799,878.93 is: 923,840,517.54
Step by Step Solution
- Step 1: Write the proportion equation
1,780,332,370.47 : 2,670,905,329.47 = 615,799,878.93 : x - Step 2: Convert to fraction form
1,780,332,370.47/2,670,905,329.47 = 615,799,878.93/x - Step 3: Cross multiply
1,780,332,370.47x = 2,670,905,329.47 × 615,799,878.93 - Step 4: Simplify right side
1,780,332,370.47x = 1,644,743,178,521,117,440 - Step 5: Solve for x
x = 1,644,743,178,521,117,440/1,780,332,370.47 - Step 6: Final answer
x = 923,840,517.54
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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.