Finding the Fourth Proportional to 1,228,331,451.20, 1,842,497,176.80 and 683,072,985.20
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Solution
The fourth proportional to 1,228,331,451.20, 1,842,497,176.80 and 683,072,985.20 is: 1,024,609,477.80
Step by Step Solution
- Step 1: Write the proportion equation
1,228,331,451.20 : 1,842,497,176.80 = 683,072,985.20 : x - Step 2: Convert to fraction form
1,228,331,451.20/1,842,497,176.80 = 683,072,985.20/x - Step 3: Cross multiply
1,228,331,451.20x = 1,842,497,176.80 × 683,072,985.20 - Step 4: Simplify right side
1,228,331,451.20x = 1,258,560,046,779,348,224 - Step 5: Solve for x
x = 1,258,560,046,779,348,224/1,228,331,451.20 - Step 6: Final answer
x = 1,024,609,477.80
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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.