Finding the Fourth Proportional to 1,115,724,973.22, 1,539,654,227.60 and 607,089,786.58
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Solution
The fourth proportional to 1,115,724,973.22, 1,539,654,227.60 and 607,089,786.58 is: 837,758,747.79
Step by Step Solution
- Step 1: Write the proportion equation
1,115,724,973.22 : 1,539,654,227.60 = 607,089,786.58 : x - Step 2: Convert to fraction form
1,115,724,973.22/1,539,654,227.60 = 607,089,786.58/x - Step 3: Cross multiply
1,115,724,973.22x = 1,539,654,227.60 × 607,089,786.58 - Step 4: Simplify right side
1,115,724,973.22x = 934,708,356,440,678,784 - Step 5: Solve for x
x = 934,708,356,440,678,784/1,115,724,973.22 - Step 6: Final answer
x = 837,758,747.79
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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.