Finding the Fourth Proportional to 1,687,407,449.85, 2,328,621,470.87 and 1,009,224,389.08
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Solution
The fourth proportional to 1,687,407,449.85, 2,328,621,470.87 and 1,009,224,389.08 is: 1,392,729,172.52
Step by Step Solution
- Step 1: Write the proportion equation
1,687,407,449.85 : 2,328,621,470.87 = 1,009,224,389.08 : x - Step 2: Convert to fraction form
1,687,407,449.85/2,328,621,470.87 = 1,009,224,389.08/x - Step 3: Cross multiply
1,687,407,449.85x = 2,328,621,470.87 × 1,009,224,389.08 - Step 4: Simplify right side
1,687,407,449.85x = 2,350,101,581,326,478,848 - Step 5: Solve for x
x = 2,350,101,581,326,478,848/1,687,407,449.85 - Step 6: Final answer
x = 1,392,729,172.52
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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.