Finding the Fourth Proportional to 1,270,966,936.79, 1,753,889,638.18 and 698,745,823.01
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Solution
The fourth proportional to 1,270,966,936.79, 1,753,889,638.18 and 698,745,823.01 is: 964,244,641.79
Step by Step Solution
- Step 1: Write the proportion equation
1,270,966,936.79 : 1,753,889,638.18 = 698,745,823.01 : x - Step 2: Convert to fraction form
1,270,966,936.79/1,753,889,638.18 = 698,745,823.01/x - Step 3: Cross multiply
1,270,966,936.79x = 1,753,889,638.18 × 698,745,823.01 - Step 4: Simplify right side
1,270,966,936.79x = 1,225,523,058,695,301,376 - Step 5: Solve for x
x = 1,225,523,058,695,301,376/1,270,966,936.79 - Step 6: Final answer
x = 964,244,641.79
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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.