Finding the Fourth Proportional to 1,042,939,430.44, 1,564,409,706.42 and 387,805,330.09
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Solution
The fourth proportional to 1,042,939,430.44, 1,564,409,706.42 and 387,805,330.09 is: 581,708,203.65
Step by Step Solution
- Step 1: Write the proportion equation
1,042,939,430.44 : 1,564,409,706.42 = 387,805,330.09 : x - Step 2: Convert to fraction form
1,042,939,430.44/1,564,409,706.42 = 387,805,330.09/x - Step 3: Cross multiply
1,042,939,430.44x = 1,564,409,706.42 × 387,805,330.09 - Step 4: Simplify right side
1,042,939,430.44x = 606,686,422,598,200,320 - Step 5: Solve for x
x = 606,686,422,598,200,320/1,042,939,430.44 - Step 6: Final answer
x = 581,708,203.65
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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.