Finding the Fourth Proportional to 1,921,372,501.23, 2,878,765,391.88 and 1,289,921,915.79
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Solution
The fourth proportional to 1,921,372,501.23, 2,878,765,391.88 and 1,289,921,915.79 is: 1,932,671,861.93
Step by Step Solution
- Step 1: Write the proportion equation
1,921,372,501.23 : 2,878,765,391.88 = 1,289,921,915.79 : x - Step 2: Convert to fraction form
1,921,372,501.23/2,878,765,391.88 = 1,289,921,915.79/x - Step 3: Cross multiply
1,921,372,501.23x = 2,878,765,391.88 × 1,289,921,915.79 - Step 4: Simplify right side
1,921,372,501.23x = 3,713,382,569,403,799,552 - Step 5: Solve for x
x = 3,713,382,569,403,799,552/1,921,372,501.23 - Step 6: Final answer
x = 1,932,671,861.93
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.