Finding the Fourth Proportional to 1,270,966,929.78, 1,753,889,628.54 and 698,745,815.99
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Solution
The fourth proportional to 1,270,966,929.78, 1,753,889,628.54 and 698,745,815.99 is: 964,244,632.12
Step by Step Solution
- Step 1: Write the proportion equation
1,270,966,929.78 : 1,753,889,628.54 = 698,745,815.99 : x - Step 2: Convert to fraction form
1,270,966,929.78/1,753,889,628.54 = 698,745,815.99/x - Step 3: Cross multiply
1,270,966,929.78x = 1,753,889,628.54 × 698,745,815.99 - Step 4: Simplify right side
1,270,966,929.78x = 1,225,523,039,641,810,944 - Step 5: Solve for x
x = 1,225,523,039,641,810,944/1,270,966,929.78 - Step 6: Final answer
x = 964,244,632.12
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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.