Finding the Fourth Proportional to 1,237,529,777,922.40, 1,707,791,175,657.20 and 688,809,307,036.55
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Solution
The fourth proportional to 1,237,529,777,922.40, 1,707,791,175,657.20 and 688,809,307,036.55 is: 950,556,889,420.83
Step by Step Solution
- Step 1: Write the proportion equation
1,237,529,777,922.40 : 1,707,791,175,657.20 = 688,809,307,036.55 : x - Step 2: Convert to fraction form
1,237,529,777,922.40/1,707,791,175,657.20 = 688,809,307,036.55/x - Step 3: Cross multiply
1,237,529,777,922.40x = 1,707,791,175,657.20 × 688,809,307,036.55 - Step 4: Simplify right side
1,237,529,777,922.40x = 1,176,342,456,267,570,956,730,368 - Step 5: Solve for x
x = 1,176,342,456,267,570,956,730,368/1,237,529,777,922.40 - Step 6: Final answer
x = 950,556,889,420.83
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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.