Finding the Fourth Proportional to 1,683,778,672.74, 2,323,629,603.70 and 931,142,775.94
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Solution
The fourth proportional to 1,683,778,672.74, 2,323,629,603.70 and 931,142,775.94 is: 1,284,985,345.45
Step by Step Solution
- Step 1: Write the proportion equation
1,683,778,672.74 : 2,323,629,603.70 = 931,142,775.94 : x - Step 2: Convert to fraction form
1,683,778,672.74/2,323,629,603.70 = 931,142,775.94/x - Step 3: Cross multiply
1,683,778,672.74x = 2,323,629,603.70 × 931,142,775.94 - Step 4: Simplify right side
1,683,778,672.74x = 2,163,630,919,445,580,032 - Step 5: Solve for x
x = 2,163,630,919,445,580,032/1,683,778,672.74 - Step 6: Final answer
x = 1,284,985,345.45
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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.