Finding the Fourth Proportional to 663,854,737.97, 916,239,487.92 and 395,947,762.85
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Solution
The fourth proportional to 663,854,737.97, 916,239,487.92 and 395,947,762.85 is: 546,479,455.11
Step by Step Solution
- Step 1: Write the proportion equation
663,854,737.97 : 916,239,487.92 = 395,947,762.85 : x - Step 2: Convert to fraction form
663,854,737.97/916,239,487.92 = 395,947,762.85/x - Step 3: Cross multiply
663,854,737.97x = 916,239,487.92 × 395,947,762.85 - Step 4: Simplify right side
663,854,737.97x = 362,782,975,477,559,424 - Step 5: Solve for x
x = 362,782,975,477,559,424/663,854,737.97 - Step 6: Final answer
x = 546,479,455.11
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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.