Finding the Fourth Proportional to 1,272,098,497.98, 1,905,936,417.12 and 892,706,091.26
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Solution
The fourth proportional to 1,272,098,497.98, 1,905,936,417.12 and 892,706,091.26 is: 1,337,507,317.09
Step by Step Solution
- Step 1: Write the proportion equation
1,272,098,497.98 : 1,905,936,417.12 = 892,706,091.26 : x - Step 2: Convert to fraction form
1,272,098,497.98/1,905,936,417.12 = 892,706,091.26/x - Step 3: Cross multiply
1,272,098,497.98x = 1,905,936,417.12 × 892,706,091.26 - Step 4: Simplify right side
1,272,098,497.98x = 1,701,441,049,111,057,408 - Step 5: Solve for x
x = 1,701,441,049,111,057,408/1,272,098,497.98 - Step 6: Final answer
x = 1,337,507,317.09
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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.