Finding the Fourth Proportional to 1,376,611,639.80, 2,063,447,102.55 and 785,128,435.62
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Solution
The fourth proportional to 1,376,611,639.80, 2,063,447,102.55 and 785,128,435.62 is: 1,176,854,058.74
Step by Step Solution
- Step 1: Write the proportion equation
1,376,611,639.80 : 2,063,447,102.55 = 785,128,435.62 : x - Step 2: Convert to fraction form
1,376,611,639.80/2,063,447,102.55 = 785,128,435.62/x - Step 3: Cross multiply
1,376,611,639.80x = 2,063,447,102.55 × 785,128,435.62 - Step 4: Simplify right side
1,376,611,639.80x = 1,620,070,995,609,703,168 - Step 5: Solve for x
x = 1,620,070,995,609,703,168/1,376,611,639.80 - Step 6: Final answer
x = 1,176,854,058.74
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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.