Finding the Fourth Proportional to 1,678,542,327.90, 2,316,395,613.97 and 915,603,024.05
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Solution
The fourth proportional to 1,678,542,327.90, 2,316,395,613.97 and 915,603,024.05 is: 1,263,536,101.41
Step by Step Solution
- Step 1: Write the proportion equation
1,678,542,327.90 : 2,316,395,613.97 = 915,603,024.05 : x - Step 2: Convert to fraction form
1,678,542,327.90/2,316,395,613.97 = 915,603,024.05/x - Step 3: Cross multiply
1,678,542,327.90x = 2,316,395,613.97 × 915,603,024.05 - Step 4: Simplify right side
1,678,542,327.90x = 2,120,898,829,047,088,128 - Step 5: Solve for x
x = 2,120,898,829,047,088,128/1,678,542,327.90 - Step 6: Final answer
x = 1,263,536,101.41
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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.